21798075

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 39441920

約数和(自身を除く): 17643845

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 79, 195, 237, 283, 325, 395, 849, 975, 1027, 1185, 1415, 1975, 3081, 3679, 4245, 5135, 5925, 7075, 11037, 15405, 18395, 21225, 22357, 25675, 55185, 67071, 77025, 91975, 111785, 275925, 290641, 335355, 558925, 871923, 1453205, 1676775, 4359615, 7266025, 21798075]

約数ペア:

[(1, 21798075), (3, 7266025), (5, 4359615), (13, 1676775), (15, 1453205), (25, 871923), (39, 558925), (65, 335355), (75, 290641), (79, 275925), (195, 111785), (237, 91975), (283, 77025), (325, 67071), (395, 55185), (849, 25675), (975, 22357), (1027, 21225), (1185, 18395), (1415, 15405), (1975, 11037), (3081, 7075), (3679, 5925), (4245, 5135)]