639490964

素因数分解:

$2^2\times 7^2\times {\mathrm{659}}^1\times {\mathrm{4951}}^1$

素因数の和:5628

約数の個数: 36

約数和(自身を含む): 1304059680

約数和(自身を除く): 664568716

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 659, 1318, 2636, 4613, 4951, 9226, 9902, 18452, 19804, 32291, 34657, 64582, 69314, 129164, 138628, 242599, 485198, 970396, 3262709, 6525418, 13050836, 22838963, 45677926, 91355852, 159872741, 319745482, 639490964]

約数ペア:

[(1, 639490964), (2, 319745482), (4, 159872741), (7, 91355852), (14, 45677926), (28, 22838963), (49, 13050836), (98, 6525418), (196, 3262709), (659, 970396), (1318, 485198), (2636, 242599), (4613, 138628), (4951, 129164), (9226, 69314), (9902, 64582), (18452, 34657), (19804, 32291)]