628807240

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{221411}}^1$

素因数の和:221493

約数の個数: 32

約数和(自身を含む): 1434749760

約数和(自身を除く): 805942520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 221411, 442822, 885644, 1107055, 1771288, 2214110, 4428220, 8856440, 15720181, 31440362, 62880724, 78600905, 125761448, 157201810, 314403620, 628807240]

約数ペア:

[(1, 628807240), (2, 314403620), (4, 157201810), (5, 125761448), (8, 78600905), (10, 62880724), (20, 31440362), (40, 15720181), (71, 8856440), (142, 4428220), (284, 2214110), (355, 1771288), (568, 1107055), (710, 885644), (1420, 442822), (2840, 221411)]