688021240

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{242261}}^1$

素因数の和:242343

約数の個数: 32

約数和(自身を含む): 1569857760

約数和(自身を除く): 881836520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 242261, 484522, 969044, 1211305, 1938088, 2422610, 4845220, 9690440, 17200531, 34401062, 68802124, 86002655, 137604248, 172005310, 344010620, 688021240]

約数ペア:

[(1, 688021240), (2, 344010620), (4, 172005310), (5, 137604248), (8, 86002655), (10, 68802124), (20, 34401062), (40, 17200531), (71, 9690440), (142, 4845220), (284, 2422610), (355, 1938088), (568, 1211305), (710, 969044), (1420, 484522), (2840, 242261)]