720103940

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{251}}^1\times {\mathrm{2141}}^1$

素因数の和:2468

約数の個数: 48

約数和(自身を含む): 1541623104

約数和(自身を除く): 821519164

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 251, 268, 335, 502, 670, 1004, 1255, 1340, 2141, 2510, 4282, 5020, 8564, 10705, 16817, 21410, 33634, 42820, 67268, 84085, 143447, 168170, 286894, 336340, 537391, 573788, 717235, 1074782, 1434470, 2149564, 2686955, 2868940, 5373910, 10747820, 36005197, 72010394, 144020788, 180025985, 360051970, 720103940]

約数ペア:

[(1, 720103940), (2, 360051970), (4, 180025985), (5, 144020788), (10, 72010394), (20, 36005197), (67, 10747820), (134, 5373910), (251, 2868940), (268, 2686955), (335, 2149564), (502, 1434470), (670, 1074782), (1004, 717235), (1255, 573788), (1340, 537391), (2141, 336340), (2510, 286894), (4282, 168170), (5020, 143447), (8564, 84085), (10705, 67268), (16817, 42820), (21410, 33634)]