1990647925

素因数分解:

$5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{1321}}^1$

素因数の和:1526

約数の個数: 48

約数和(自身を含む): 2885132800

約数和(自身を除く): 894484875

約数列:

[1, 5, 7, 25, 35, 79, 109, 175, 395, 545, 553, 763, 1321, 1975, 2725, 2765, 3815, 6605, 8611, 9247, 13825, 19075, 33025, 43055, 46235, 60277, 104359, 143989, 215275, 231175, 301385, 521795, 719945, 730513, 1007923, 1506925, 2608975, 3599725, 3652565, 5039615, 11375131, 18262825, 25198075, 56875655, 79625917, 284378275, 398129585, 1990647925]

約数ペア:

[(1, 1990647925), (5, 398129585), (7, 284378275), (25, 79625917), (35, 56875655), (79, 25198075), (109, 18262825), (175, 11375131), (395, 5039615), (545, 3652565), (553, 3599725), (763, 2608975), (1321, 1506925), (1975, 1007923), (2725, 730513), (2765, 719945), (3815, 521795), (6605, 301385), (8611, 231175), (9247, 215275), (13825, 143989), (19075, 104359), (33025, 60277), (43055, 46235)]