1640394925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{631}}^1$

素因数の和:1094

約数の個数: 48

約数和(自身を含む): 2314990720

約数和(自身を除く): 674595795

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 421, 475, 631, 1235, 2105, 3155, 5473, 6175, 7999, 8203, 10525, 11989, 15775, 27365, 39995, 41015, 59945, 103987, 136825, 155857, 199975, 205075, 265651, 299725, 519935, 779285, 1328255, 2599675, 3453463, 3896425, 5047369, 6641275, 17267315, 25236845, 65615797, 86336575, 126184225, 328078985, 1640394925]

約数ペア:

[(1, 1640394925), (5, 328078985), (13, 126184225), (19, 86336575), (25, 65615797), (65, 25236845), (95, 17267315), (247, 6641275), (325, 5047369), (421, 3896425), (475, 3453463), (631, 2599675), (1235, 1328255), (2105, 779285), (3155, 519935), (5473, 299725), (6175, 265651), (7999, 205075), (8203, 199975), (10525, 155857), (11989, 136825), (15775, 103987), (27365, 59945), (39995, 41015)]