397317080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{320417}}^1$

素因数の和:320459

約数の個数: 32

約数和(自身を含む): 922803840

約数和(自身を除く): 525486760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 320417, 640834, 1281668, 1602085, 2563336, 3204170, 6408340, 9932927, 12816680, 19865854, 39731708, 49664635, 79463416, 99329270, 198658540, 397317080]

約数ペア:

[(1, 397317080), (2, 198658540), (4, 99329270), (5, 79463416), (8, 49664635), (10, 39731708), (20, 19865854), (31, 12816680), (40, 9932927), (62, 6408340), (124, 3204170), (155, 2563336), (248, 1602085), (310, 1281668), (620, 640834), (1240, 320417)]