638430960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{19417}}^1$

素因数の和:19570

約数の個数: 80

約数和(自身を含む): 1993684896

約数和(自身を除く): 1355253936

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 137, 240, 274, 411, 548, 685, 822, 1096, 1370, 1644, 2055, 2192, 2740, 3288, 4110, 5480, 6576, 8220, 10960, 16440, 19417, 32880, 38834, 58251, 77668, 97085, 116502, 155336, 194170, 233004, 291255, 310672, 388340, 466008, 582510, 776680, 932016, 1165020, 1553360, 2330040, 2660129, 4660080, 5320258, 7980387, 10640516, 13300645, 15960774, 21281032, 26601290, 31921548, 39901935, 42562064, 53202580, 63843096, 79803870, 106405160, 127686192, 159607740, 212810320, 319215480, 638430960]

約数ペア:

[(1, 638430960), (2, 319215480), (3, 212810320), (4, 159607740), (5, 127686192), (6, 106405160), (8, 79803870), (10, 63843096), (12, 53202580), (15, 42562064), (16, 39901935), (20, 31921548), (24, 26601290), (30, 21281032), (40, 15960774), (48, 13300645), (60, 10640516), (80, 7980387), (120, 5320258), (137, 4660080), (240, 2660129), (274, 2330040), (411, 1553360), (548, 1165020), (685, 932016), (822, 776680), (1096, 582510), (1370, 466008), (1644, 388340), (2055, 310672), (2192, 291255), (2740, 233004), (3288, 194170), (4110, 155336), (5480, 116502), (6576, 97085), (8220, 77668), (10960, 58251), (16440, 38834), (19417, 32880)]