398521120

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{80347}}^1$

素因数の和:80393

約数の個数: 48

約数和(自身を含む): 971889408

約数和(自身を除く): 573368288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 80347, 160694, 321388, 401735, 642776, 803470, 1285552, 1606940, 2490757, 2571104, 3213880, 4981514, 6427760, 9963028, 12453785, 12855520, 19926056, 24907570, 39852112, 49815140, 79704224, 99630280, 199260560, 398521120]

約数ペア:

[(1, 398521120), (2, 199260560), (4, 99630280), (5, 79704224), (8, 49815140), (10, 39852112), (16, 24907570), (20, 19926056), (31, 12855520), (32, 12453785), (40, 9963028), (62, 6427760), (80, 4981514), (124, 3213880), (155, 2571104), (160, 2490757), (248, 1606940), (310, 1285552), (496, 803470), (620, 642776), (992, 401735), (1240, 321388), (2480, 160694), (4960, 80347)]