28970120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 68567040

約数和(自身を除く): 39596920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 383, 488, 610, 620, 766, 1220, 1240, 1532, 1891, 1915, 2440, 3064, 3782, 3830, 7564, 7660, 9455, 11873, 15128, 15320, 18910, 23363, 23746, 37820, 46726, 47492, 59365, 75640, 93452, 94984, 116815, 118730, 186904, 233630, 237460, 467260, 474920, 724253, 934520, 1448506, 2897012, 3621265, 5794024, 7242530, 14485060, 28970120]

約数ペア:

[(1, 28970120), (2, 14485060), (4, 7242530), (5, 5794024), (8, 3621265), (10, 2897012), (20, 1448506), (31, 934520), (40, 724253), (61, 474920), (62, 467260), (122, 237460), (124, 233630), (155, 186904), (244, 118730), (248, 116815), (305, 94984), (310, 93452), (383, 75640), (488, 59365), (610, 47492), (620, 46726), (766, 37820), (1220, 23746), (1240, 23363), (1532, 18910), (1891, 15320), (1915, 15128), (2440, 11873), (3064, 9455), (3782, 7660), (3830, 7564)]