815580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 2594592

約数和(自身を除く): 1779012

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 197, 207, 230, 276, 345, 394, 414, 460, 591, 690, 788, 828, 985, 1035, 1182, 1380, 1773, 1970, 2070, 2364, 2955, 3546, 3940, 4140, 4531, 5910, 7092, 8865, 9062, 11820, 13593, 17730, 18124, 22655, 27186, 35460, 40779, 45310, 54372, 67965, 81558, 90620, 135930, 163116, 203895, 271860, 407790, 815580]

約数ペア:

[(1, 815580), (2, 407790), (3, 271860), (4, 203895), (5, 163116), (6, 135930), (9, 90620), (10, 81558), (12, 67965), (15, 54372), (18, 45310), (20, 40779), (23, 35460), (30, 27186), (36, 22655), (45, 18124), (46, 17730), (60, 13593), (69, 11820), (90, 9062), (92, 8865), (115, 7092), (138, 5910), (180, 4531), (197, 4140), (207, 3940), (230, 3546), (276, 2955), (345, 2364), (394, 2070), (414, 1970), (460, 1773), (591, 1380), (690, 1182), (788, 1035), (828, 985)]