30915775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{389}}^1$

素因数の和:444

約数の個数: 36

約数和(自身を含む): 44539560

約数和(自身を除く): 13623785

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 275, 289, 389, 425, 935, 1445, 1945, 3179, 4279, 4675, 6613, 7225, 9725, 15895, 21395, 33065, 72743, 79475, 106975, 112421, 165325, 363715, 562105, 1236631, 1818575, 2810525, 6183155, 30915775]

約数ペア:

[(1, 30915775), (5, 6183155), (11, 2810525), (17, 1818575), (25, 1236631), (55, 562105), (85, 363715), (187, 165325), (275, 112421), (289, 106975), (389, 79475), (425, 72743), (935, 33065), (1445, 21395), (1945, 15895), (3179, 9725), (4279, 7225), (4675, 6613)]