640147210

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{13859}}^1$

素因数の和:14046

約数の個数: 32

約数和(自身を含む): 1197504000

約数和(自身を除く): 557356790

約数列:

[1, 2, 5, 10, 31, 62, 149, 155, 298, 310, 745, 1490, 4619, 9238, 13859, 23095, 27718, 46190, 69295, 138590, 429629, 859258, 2064991, 2148145, 4129982, 4296290, 10324955, 20649910, 64014721, 128029442, 320073605, 640147210]

約数ペア:

[(1, 640147210), (2, 320073605), (5, 128029442), (10, 64014721), (31, 20649910), (62, 10324955), (149, 4296290), (155, 4129982), (298, 2148145), (310, 2064991), (745, 859258), (1490, 429629), (4619, 138590), (9238, 69295), (13859, 46190), (23095, 27718)]