20306250

素因数分解:

$2^1\times 3^2\times 5^5\times {\mathrm{19}}^2$

素因数の和:71

約数の個数: 108

約数和(自身を含む): 58039254

約数和(自身を除く): 37733004

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 25, 30, 38, 45, 50, 57, 75, 90, 95, 114, 125, 150, 171, 190, 225, 250, 285, 342, 361, 375, 450, 475, 570, 625, 722, 750, 855, 950, 1083, 1125, 1250, 1425, 1710, 1805, 1875, 2166, 2250, 2375, 2850, 3125, 3249, 3610, 3750, 4275, 4750, 5415, 5625, 6250, 6498, 7125, 8550, 9025, 9375, 10830, 11250, 11875, 14250, 16245, 18050, 18750, 21375, 23750, 27075, 28125, 32490, 35625, 42750, 45125, 54150, 56250, 59375, 71250, 81225, 90250, 106875, 118750, 135375, 162450, 178125, 213750, 225625, 270750, 356250, 406125, 451250, 534375, 676875, 812250, 1068750, 1128125, 1353750, 2030625, 2256250, 3384375, 4061250, 6768750, 10153125, 20306250]

約数ペア:

[(1, 20306250), (2, 10153125), (3, 6768750), (5, 4061250), (6, 3384375), (9, 2256250), (10, 2030625), (15, 1353750), (18, 1128125), (19, 1068750), (25, 812250), (30, 676875), (38, 534375), (45, 451250), (50, 406125), (57, 356250), (75, 270750), (90, 225625), (95, 213750), (114, 178125), (125, 162450), (150, 135375), (171, 118750), (190, 106875), (225, 90250), (250, 81225), (285, 71250), (342, 59375), (361, 56250), (375, 54150), (450, 45125), (475, 42750), (570, 35625), (625, 32490), (722, 28125), (750, 27075), (855, 23750), (950, 21375), (1083, 18750), (1125, 18050), (1250, 16245), (1425, 14250), (1710, 11875), (1805, 11250), (1875, 10830), (2166, 9375), (2250, 9025), (2375, 8550), (2850, 7125), (3125, 6498), (3249, 6250), (3610, 5625), (3750, 5415), (4275, 4750)]