81225000

素因数分解:

$2^3\times 3^2\times 5^5\times {\mathrm{19}}^2$

素因数の和:75

約数の個数: 216

約数和(自身を含む): 290196270

約数和(自身を除く): 208971270

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 25, 30, 36, 38, 40, 45, 50, 57, 60, 72, 75, 76, 90, 95, 100, 114, 120, 125, 150, 152, 171, 180, 190, 200, 225, 228, 250, 285, 300, 342, 360, 361, 375, 380, 450, 456, 475, 500, 570, 600, 625, 684, 722, 750, 760, 855, 900, 950, 1000, 1083, 1125, 1140, 1250, 1368, 1425, 1444, 1500, 1710, 1800, 1805, 1875, 1900, 2166, 2250, 2280, 2375, 2500, 2850, 2888, 3000, 3125, 3249, 3420, 3610, 3750, 3800, 4275, 4332, 4500, 4750, 5000, 5415, 5625, 5700, 6250, 6498, 6840, 7125, 7220, 7500, 8550, 8664, 9000, 9025, 9375, 9500, 10830, 11250, 11400, 11875, 12500, 12996, 14250, 14440, 15000, 16245, 17100, 18050, 18750, 19000, 21375, 21660, 22500, 23750, 25000, 25992, 27075, 28125, 28500, 32490, 34200, 35625, 36100, 37500, 42750, 43320, 45000, 45125, 47500, 54150, 56250, 57000, 59375, 64980, 71250, 72200, 75000, 81225, 85500, 90250, 95000, 106875, 108300, 112500, 118750, 129960, 135375, 142500, 162450, 171000, 178125, 180500, 213750, 216600, 225000, 225625, 237500, 270750, 285000, 324900, 356250, 361000, 406125, 427500, 451250, 475000, 534375, 541500, 649800, 676875, 712500, 812250, 855000, 902500, 1068750, 1083000, 1128125, 1353750, 1425000, 1624500, 1805000, 2030625, 2137500, 2256250, 2707500, 3249000, 3384375, 4061250, 4275000, 4512500, 5415000, 6768750, 8122500, 9025000, 10153125, 13537500, 16245000, 20306250, 27075000, 40612500, 81225000]

約数ペア:

[(1, 81225000), (2, 40612500), (3, 27075000), (4, 20306250), (5, 16245000), (6, 13537500), (8, 10153125), (9, 9025000), (10, 8122500), (12, 6768750), (15, 5415000), (18, 4512500), (19, 4275000), (20, 4061250), (24, 3384375), (25, 3249000), (30, 2707500), (36, 2256250), (38, 2137500), (40, 2030625), (45, 1805000), (50, 1624500), (57, 1425000), (60, 1353750), (72, 1128125), (75, 1083000), (76, 1068750), (90, 902500), (95, 855000), (100, 812250), (114, 712500), (120, 676875), (125, 649800), (150, 541500), (152, 534375), (171, 475000), (180, 451250), (190, 427500), (200, 406125), (225, 361000), (228, 356250), (250, 324900), (285, 285000), (300, 270750), (342, 237500), (360, 225625), (361, 225000), (375, 216600), (380, 213750), (450, 180500), (456, 178125), (475, 171000), (500, 162450), (570, 142500), (600, 135375), (625, 129960), (684, 118750), (722, 112500), (750, 108300), (760, 106875), (855, 95000), (900, 90250), (950, 85500), (1000, 81225), (1083, 75000), (1125, 72200), (1140, 71250), (1250, 64980), (1368, 59375), (1425, 57000), (1444, 56250), (1500, 54150), (1710, 47500), (1800, 45125), (1805, 45000), (1875, 43320), (1900, 42750), (2166, 37500), (2250, 36100), (2280, 35625), (2375, 34200), (2500, 32490), (2850, 28500), (2888, 28125), (3000, 27075), (3125, 25992), (3249, 25000), (3420, 23750), (3610, 22500), (3750, 21660), (3800, 21375), (4275, 19000), (4332, 18750), (4500, 18050), (4750, 17100), (5000, 16245), (5415, 15000), (5625, 14440), (5700, 14250), (6250, 12996), (6498, 12500), (6840, 11875), (7125, 11400), (7220, 11250), (7500, 10830), (8550, 9500), (8664, 9375), (9000, 9025)]