639643140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{677}}^1$

素因数の和:902

約数の個数: 144

約数和(自身を含む): 2021226480

約数和(自身を除く): 1381583340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 181, 261, 290, 348, 362, 435, 522, 543, 580, 677, 724, 870, 905, 1044, 1086, 1305, 1354, 1629, 1740, 1810, 2031, 2172, 2610, 2708, 2715, 3258, 3385, 3620, 4062, 5220, 5249, 5430, 6093, 6516, 6770, 8124, 8145, 10155, 10498, 10860, 12186, 13540, 15747, 16290, 19633, 20310, 20996, 24372, 26245, 30465, 31494, 32580, 39266, 40620, 47241, 52490, 58899, 60930, 62988, 78532, 78735, 94482, 98165, 104980, 117798, 121860, 122537, 157470, 176697, 188964, 196330, 235596, 236205, 245074, 294495, 314940, 353394, 367611, 392660, 472410, 490148, 588990, 612685, 706788, 735222, 883485, 944820, 1102833, 1177980, 1225370, 1470444, 1766970, 1838055, 2205666, 2450740, 3533940, 3553573, 3676110, 4411332, 5514165, 7107146, 7352220, 10660719, 11028330, 14214292, 17767865, 21321438, 22056660, 31982157, 35535730, 42642876, 53303595, 63964314, 71071460, 106607190, 127928628, 159910785, 213214380, 319821570, 639643140]

約数ペア:

[(1, 639643140), (2, 319821570), (3, 213214380), (4, 159910785), (5, 127928628), (6, 106607190), (9, 71071460), (10, 63964314), (12, 53303595), (15, 42642876), (18, 35535730), (20, 31982157), (29, 22056660), (30, 21321438), (36, 17767865), (45, 14214292), (58, 11028330), (60, 10660719), (87, 7352220), (90, 7107146), (116, 5514165), (145, 4411332), (174, 3676110), (180, 3553573), (181, 3533940), (261, 2450740), (290, 2205666), (348, 1838055), (362, 1766970), (435, 1470444), (522, 1225370), (543, 1177980), (580, 1102833), (677, 944820), (724, 883485), (870, 735222), (905, 706788), (1044, 612685), (1086, 588990), (1305, 490148), (1354, 472410), (1629, 392660), (1740, 367611), (1810, 353394), (2031, 314940), (2172, 294495), (2610, 245074), (2708, 236205), (2715, 235596), (3258, 196330), (3385, 188964), (3620, 176697), (4062, 157470), (5220, 122537), (5249, 121860), (5430, 117798), (6093, 104980), (6516, 98165), (6770, 94482), (8124, 78735), (8145, 78532), (10155, 62988), (10498, 60930), (10860, 58899), (12186, 52490), (13540, 47241), (15747, 40620), (16290, 39266), (19633, 32580), (20310, 31494), (20996, 30465), (24372, 26245)]