21871640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11159}}^1$

素因数の和:11184

約数の個数: 48

約数和(自身を含む): 57250800

約数和(自身を除く): 35379160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 11159, 22318, 44636, 55795, 78113, 89272, 111590, 156226, 223180, 312452, 390565, 446360, 546791, 624904, 781130, 1093582, 1562260, 2187164, 2733955, 3124520, 4374328, 5467910, 10935820, 21871640]

約数ペア:

[(1, 21871640), (2, 10935820), (4, 5467910), (5, 4374328), (7, 3124520), (8, 2733955), (10, 2187164), (14, 1562260), (20, 1093582), (28, 781130), (35, 624904), (40, 546791), (49, 446360), (56, 390565), (70, 312452), (98, 223180), (140, 156226), (196, 111590), (245, 89272), (280, 78113), (392, 55795), (490, 44636), (980, 22318), (1960, 11159)]