218156920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:269

約数の個数: 128

約数和(自身を含む): 547430400

約数和(自身を除く): 329273480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 79, 85, 124, 131, 136, 155, 158, 170, 248, 262, 310, 316, 340, 395, 524, 527, 620, 632, 655, 680, 790, 1048, 1054, 1240, 1310, 1343, 1580, 2108, 2227, 2449, 2620, 2635, 2686, 3160, 4061, 4216, 4454, 4898, 5240, 5270, 5372, 6715, 8122, 8908, 9796, 10349, 10540, 10744, 11135, 12245, 13430, 16244, 17816, 19592, 20305, 20698, 21080, 22270, 24490, 26860, 32488, 40610, 41396, 41633, 44540, 48980, 51745, 53720, 69037, 81220, 82792, 83266, 89080, 97960, 103490, 138074, 162440, 166532, 175933, 206980, 208165, 276148, 320819, 333064, 345185, 351866, 413960, 416330, 552296, 641638, 690370, 703732, 832660, 879665, 1283276, 1380740, 1407464, 1604095, 1665320, 1759330, 2566552, 2761480, 3208190, 3518660, 5453923, 6416380, 7037320, 10907846, 12832760, 21815692, 27269615, 43631384, 54539230, 109078460, 218156920]

約数ペア:

[(1, 218156920), (2, 109078460), (4, 54539230), (5, 43631384), (8, 27269615), (10, 21815692), (17, 12832760), (20, 10907846), (31, 7037320), (34, 6416380), (40, 5453923), (62, 3518660), (68, 3208190), (79, 2761480), (85, 2566552), (124, 1759330), (131, 1665320), (136, 1604095), (155, 1407464), (158, 1380740), (170, 1283276), (248, 879665), (262, 832660), (310, 703732), (316, 690370), (340, 641638), (395, 552296), (524, 416330), (527, 413960), (620, 351866), (632, 345185), (655, 333064), (680, 320819), (790, 276148), (1048, 208165), (1054, 206980), (1240, 175933), (1310, 166532), (1343, 162440), (1580, 138074), (2108, 103490), (2227, 97960), (2449, 89080), (2620, 83266), (2635, 82792), (2686, 81220), (3160, 69037), (4061, 53720), (4216, 51745), (4454, 48980), (4898, 44540), (5240, 41633), (5270, 41396), (5372, 40610), (6715, 32488), (8122, 26860), (8908, 24490), (9796, 22270), (10349, 21080), (10540, 20698), (10744, 20305), (11135, 19592), (12245, 17816), (13430, 16244)]