18871560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:156

約数の個数: 192

約数和(自身を含む): 67392000

約数和(自身を除く): 48520440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 31, 36, 38, 40, 45, 57, 60, 62, 72, 76, 89, 90, 93, 95, 114, 120, 124, 152, 155, 171, 178, 180, 186, 190, 228, 248, 267, 279, 285, 310, 342, 356, 360, 372, 380, 445, 456, 465, 534, 558, 570, 589, 620, 684, 712, 744, 760, 801, 855, 890, 930, 1068, 1116, 1140, 1178, 1240, 1335, 1368, 1395, 1602, 1691, 1710, 1767, 1780, 1860, 2136, 2232, 2280, 2356, 2670, 2759, 2790, 2945, 3204, 3382, 3420, 3534, 3560, 3720, 4005, 4712, 5073, 5301, 5340, 5518, 5580, 5890, 6408, 6764, 6840, 7068, 8010, 8277, 8455, 8835, 10146, 10602, 10680, 11036, 11160, 11780, 13528, 13795, 14136, 15219, 16020, 16554, 16910, 17670, 20292, 21204, 22072, 23560, 24831, 25365, 26505, 27590, 30438, 32040, 33108, 33820, 35340, 40584, 41385, 42408, 49662, 50730, 52421, 53010, 55180, 60876, 66216, 67640, 70680, 76095, 82770, 99324, 101460, 104842, 106020, 110360, 121752, 124155, 152190, 157263, 165540, 198648, 202920, 209684, 212040, 248310, 262105, 304380, 314526, 331080, 419368, 471789, 496620, 524210, 608760, 629052, 786315, 943578, 993240, 1048420, 1258104, 1572630, 1887156, 2096840, 2358945, 3145260, 3774312, 4717890, 6290520, 9435780, 18871560]

約数ペア:

[(1, 18871560), (2, 9435780), (3, 6290520), (4, 4717890), (5, 3774312), (6, 3145260), (8, 2358945), (9, 2096840), (10, 1887156), (12, 1572630), (15, 1258104), (18, 1048420), (19, 993240), (20, 943578), (24, 786315), (30, 629052), (31, 608760), (36, 524210), (38, 496620), (40, 471789), (45, 419368), (57, 331080), (60, 314526), (62, 304380), (72, 262105), (76, 248310), (89, 212040), (90, 209684), (93, 202920), (95, 198648), (114, 165540), (120, 157263), (124, 152190), (152, 124155), (155, 121752), (171, 110360), (178, 106020), (180, 104842), (186, 101460), (190, 99324), (228, 82770), (248, 76095), (267, 70680), (279, 67640), (285, 66216), (310, 60876), (342, 55180), (356, 53010), (360, 52421), (372, 50730), (380, 49662), (445, 42408), (456, 41385), (465, 40584), (534, 35340), (558, 33820), (570, 33108), (589, 32040), (620, 30438), (684, 27590), (712, 26505), (744, 25365), (760, 24831), (801, 23560), (855, 22072), (890, 21204), (930, 20292), (1068, 17670), (1116, 16910), (1140, 16554), (1178, 16020), (1240, 15219), (1335, 14136), (1368, 13795), (1395, 13528), (1602, 11780), (1691, 11160), (1710, 11036), (1767, 10680), (1780, 10602), (1860, 10146), (2136, 8835), (2232, 8455), (2280, 8277), (2356, 8010), (2670, 7068), (2759, 6840), (2790, 6764), (2945, 6408), (3204, 5890), (3382, 5580), (3420, 5518), (3534, 5340), (3560, 5301), (3720, 5073), (4005, 4712)]