20591220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26399}}^1$

素因数の和:26424

約数の個数: 48

約数和(自身を含む): 62092800

約数和(自身を除く): 41501580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26399, 52798, 79197, 105596, 131995, 158394, 263990, 316788, 343187, 395985, 527980, 686374, 791970, 1029561, 1372748, 1583940, 1715935, 2059122, 3431870, 4118244, 5147805, 6863740, 10295610, 20591220]

約数ペア:

[(1, 20591220), (2, 10295610), (3, 6863740), (4, 5147805), (5, 4118244), (6, 3431870), (10, 2059122), (12, 1715935), (13, 1583940), (15, 1372748), (20, 1029561), (26, 791970), (30, 686374), (39, 527980), (52, 395985), (60, 343187), (65, 316788), (78, 263990), (130, 158394), (156, 131995), (195, 105596), (260, 79197), (390, 52798), (780, 26399)]