81218280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4733}}^1$

素因数の和:4771

約数の個数: 128

約数和(自身を含む): 286312320

約数和(自身を除く): 205094040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 130, 132, 143, 156, 165, 195, 220, 260, 264, 286, 312, 330, 390, 429, 440, 520, 572, 660, 715, 780, 858, 1144, 1320, 1430, 1560, 1716, 2145, 2860, 3432, 4290, 4733, 5720, 8580, 9466, 14199, 17160, 18932, 23665, 28398, 37864, 47330, 52063, 56796, 61529, 70995, 94660, 104126, 113592, 123058, 141990, 156189, 184587, 189320, 208252, 246116, 260315, 283980, 307645, 312378, 369174, 416504, 492232, 520630, 567960, 615290, 624756, 676819, 738348, 780945, 922935, 1041260, 1230580, 1249512, 1353638, 1476696, 1561890, 1845870, 2030457, 2082520, 2461160, 2707276, 3123780, 3384095, 3691740, 4060914, 5414552, 6247560, 6768190, 7383480, 8121828, 10152285, 13536380, 16243656, 20304570, 27072760, 40609140, 81218280]

約数ペア:

[(1, 81218280), (2, 40609140), (3, 27072760), (4, 20304570), (5, 16243656), (6, 13536380), (8, 10152285), (10, 8121828), (11, 7383480), (12, 6768190), (13, 6247560), (15, 5414552), (20, 4060914), (22, 3691740), (24, 3384095), (26, 3123780), (30, 2707276), (33, 2461160), (39, 2082520), (40, 2030457), (44, 1845870), (52, 1561890), (55, 1476696), (60, 1353638), (65, 1249512), (66, 1230580), (78, 1041260), (88, 922935), (104, 780945), (110, 738348), (120, 676819), (130, 624756), (132, 615290), (143, 567960), (156, 520630), (165, 492232), (195, 416504), (220, 369174), (260, 312378), (264, 307645), (286, 283980), (312, 260315), (330, 246116), (390, 208252), (429, 189320), (440, 184587), (520, 156189), (572, 141990), (660, 123058), (715, 113592), (780, 104126), (858, 94660), (1144, 70995), (1320, 61529), (1430, 56796), (1560, 52063), (1716, 47330), (2145, 37864), (2860, 28398), (3432, 23665), (4290, 18932), (4733, 17160), (5720, 14199), (8580, 9466)]