28305393125

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:972

約数の個数: 80

約数和(自身を含む): 38943471600

約数和(自身を除く): 10638078475

約数列:

[1, 5, 17, 25, 37, 85, 89, 125, 185, 425, 445, 625, 629, 809, 925, 1513, 2125, 2225, 3145, 3293, 4045, 4625, 7565, 10625, 11125, 13753, 15725, 16465, 20225, 23125, 29933, 37825, 55625, 55981, 68765, 72001, 78625, 82325, 101125, 149665, 189125, 279905, 343825, 360005, 393125, 411625, 505625, 508861, 748325, 945625, 1224017, 1399525, 1719125, 1800025, 2058125, 2544305, 2664037, 3741625, 6120085, 6997625, 8595625, 9000125, 12721525, 13320185, 18708125, 30600425, 34988125, 45000625, 45288629, 63607625, 66600925, 153002125, 226443145, 318038125, 333004625, 765010625, 1132215725, 1665023125, 5661078625, 28305393125]

約数ペア:

[(1, 28305393125), (5, 5661078625), (17, 1665023125), (25, 1132215725), (37, 765010625), (85, 333004625), (89, 318038125), (125, 226443145), (185, 153002125), (425, 66600925), (445, 63607625), (625, 45288629), (629, 45000625), (809, 34988125), (925, 30600425), (1513, 18708125), (2125, 13320185), (2225, 12721525), (3145, 9000125), (3293, 8595625), (4045, 6997625), (4625, 6120085), (7565, 3741625), (10625, 2664037), (11125, 2544305), (13753, 2058125), (15725, 1800025), (16465, 1719125), (20225, 1399525), (23125, 1224017), (29933, 945625), (37825, 748325), (55625, 508861), (55981, 505625), (68765, 411625), (72001, 393125), (78625, 360005), (82325, 343825), (101125, 279905), (149665, 189125)]