18839968225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{179471}}^1$

素因数の和:179530

約数の個数: 48

約数和(自身を含む): 28040705280

約数和(自身を除く): 9200737055

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 323, 325, 425, 475, 1105, 1235, 1615, 4199, 5525, 6175, 8075, 20995, 104975, 179471, 897355, 2333123, 3051007, 3409949, 4486775, 11665615, 15255035, 17049745, 39663091, 44329337, 57969133, 58328075, 76275175, 85248725, 198315455, 221646685, 289845665, 753598729, 991577275, 1108233425, 1449228325, 3767993645, 18839968225]

約数ペア:

[(1, 18839968225), (5, 3767993645), (13, 1449228325), (17, 1108233425), (19, 991577275), (25, 753598729), (65, 289845665), (85, 221646685), (95, 198315455), (221, 85248725), (247, 76275175), (323, 58328075), (325, 57969133), (425, 44329337), (475, 39663091), (1105, 17049745), (1235, 15255035), (1615, 11665615), (4199, 4486775), (5525, 3409949), (6175, 3051007), (8075, 2333123), (20995, 897355), (104975, 179471)]