637618540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{331}}^1$

素因数の和:623

約数の個数: 96

約数和(自身を含む): 1499258880

約数和(自身を除く): 861640340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 239, 260, 310, 331, 403, 478, 620, 662, 806, 956, 1195, 1324, 1612, 1655, 2015, 2390, 3107, 3310, 4030, 4303, 4780, 6214, 6620, 7409, 8060, 8606, 10261, 12428, 14818, 15535, 17212, 20522, 21515, 29636, 31070, 37045, 41044, 43030, 51305, 62140, 74090, 79109, 86060, 96317, 102610, 133393, 148180, 158218, 192634, 205220, 266786, 316436, 385268, 395545, 481585, 533572, 666965, 791090, 963170, 1028417, 1333930, 1582180, 1926340, 2056834, 2452379, 2667860, 4113668, 4904758, 5142085, 9809516, 10284170, 12261895, 20568340, 24523790, 31880927, 49047580, 63761854, 127523708, 159404635, 318809270, 637618540]

約数ペア:

[(1, 637618540), (2, 318809270), (4, 159404635), (5, 127523708), (10, 63761854), (13, 49047580), (20, 31880927), (26, 24523790), (31, 20568340), (52, 12261895), (62, 10284170), (65, 9809516), (124, 5142085), (130, 4904758), (155, 4113668), (239, 2667860), (260, 2452379), (310, 2056834), (331, 1926340), (403, 1582180), (478, 1333930), (620, 1028417), (662, 963170), (806, 791090), (956, 666965), (1195, 533572), (1324, 481585), (1612, 395545), (1655, 385268), (2015, 316436), (2390, 266786), (3107, 205220), (3310, 192634), (4030, 158218), (4303, 148180), (4780, 133393), (6214, 102610), (6620, 96317), (7409, 86060), (8060, 79109), (8606, 74090), (10261, 62140), (12428, 51305), (14818, 43030), (15535, 41044), (17212, 37045), (20522, 31070), (21515, 29636)]