397427440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{160253}}^1$

素因数の和:160297

約数の個数: 40

約数和(自身を含む): 953831808

約数和(自身を除く): 556404368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 160253, 320506, 641012, 801265, 1282024, 1602530, 2564048, 3205060, 4967843, 6410120, 9935686, 12820240, 19871372, 24839215, 39742744, 49678430, 79485488, 99356860, 198713720, 397427440]

約数ペア:

[(1, 397427440), (2, 198713720), (4, 99356860), (5, 79485488), (8, 49678430), (10, 39742744), (16, 24839215), (20, 19871372), (31, 12820240), (40, 9935686), (62, 6410120), (80, 4967843), (124, 3205060), (155, 2564048), (248, 1602530), (310, 1282024), (496, 801265), (620, 641012), (1240, 320506), (2480, 160253)]