1981445830

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1201}}^1$

素因数の和:1279

約数の個数: 128

約数和(自身を含む): 4604140800

約数和(自身を除く): 2622694970

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 37, 49, 65, 70, 74, 91, 98, 130, 182, 185, 245, 259, 343, 370, 455, 481, 490, 518, 637, 686, 910, 962, 1201, 1274, 1295, 1715, 1813, 2402, 2405, 2590, 3185, 3367, 3430, 3626, 4459, 4810, 6005, 6370, 6734, 8407, 8918, 9065, 12010, 12691, 15613, 16814, 16835, 18130, 22295, 23569, 25382, 31226, 33670, 42035, 44437, 44590, 47138, 58849, 63455, 78065, 84070, 88874, 109291, 117698, 117845, 126910, 156130, 164983, 218582, 222185, 235690, 294245, 311059, 329966, 411943, 444370, 546455, 577681, 588490, 622118, 765037, 823886, 824915, 1092910, 1155362, 1530074, 1555295, 1649830, 2059715, 2177413, 2888405, 3110590, 3825185, 4043767, 4119430, 4354826, 5355259, 5776810, 7650370, 8087534, 10710518, 10887065, 15241891, 20218835, 21774130, 26776295, 28306369, 30483782, 40437670, 53552590, 56612738, 76209455, 141531845, 152418910, 198144583, 283063690, 396289166, 990722915, 1981445830]

約数ペア:

[(1, 1981445830), (2, 990722915), (5, 396289166), (7, 283063690), (10, 198144583), (13, 152418910), (14, 141531845), (26, 76209455), (35, 56612738), (37, 53552590), (49, 40437670), (65, 30483782), (70, 28306369), (74, 26776295), (91, 21774130), (98, 20218835), (130, 15241891), (182, 10887065), (185, 10710518), (245, 8087534), (259, 7650370), (343, 5776810), (370, 5355259), (455, 4354826), (481, 4119430), (490, 4043767), (518, 3825185), (637, 3110590), (686, 2888405), (910, 2177413), (962, 2059715), (1201, 1649830), (1274, 1555295), (1295, 1530074), (1715, 1155362), (1813, 1092910), (2402, 824915), (2405, 823886), (2590, 765037), (3185, 622118), (3367, 588490), (3430, 577681), (3626, 546455), (4459, 444370), (4810, 411943), (6005, 329966), (6370, 311059), (6734, 294245), (8407, 235690), (8918, 222185), (9065, 218582), (12010, 164983), (12691, 156130), (15613, 126910), (16814, 117845), (16835, 117698), (18130, 109291), (22295, 88874), (23569, 84070), (25382, 78065), (31226, 63455), (33670, 58849), (42035, 47138), (44437, 44590)]