21725040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:838

約数の個数: 80

約数和(自身を含む): 67959936

約数和(自身を除く): 46234896

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 262, 393, 524, 655, 691, 786, 1048, 1310, 1382, 1572, 1965, 2073, 2096, 2620, 2764, 3144, 3455, 3930, 4146, 5240, 5528, 6288, 6910, 7860, 8292, 10365, 10480, 11056, 13820, 15720, 16584, 20730, 27640, 31440, 33168, 41460, 55280, 82920, 90521, 165840, 181042, 271563, 362084, 452605, 543126, 724168, 905210, 1086252, 1357815, 1448336, 1810420, 2172504, 2715630, 3620840, 4345008, 5431260, 7241680, 10862520, 21725040]

約数ペア:

[(1, 21725040), (2, 10862520), (3, 7241680), (4, 5431260), (5, 4345008), (6, 3620840), (8, 2715630), (10, 2172504), (12, 1810420), (15, 1448336), (16, 1357815), (20, 1086252), (24, 905210), (30, 724168), (40, 543126), (48, 452605), (60, 362084), (80, 271563), (120, 181042), (131, 165840), (240, 90521), (262, 82920), (393, 55280), (524, 41460), (655, 33168), (691, 31440), (786, 27640), (1048, 20730), (1310, 16584), (1382, 15720), (1572, 13820), (1965, 11056), (2073, 10480), (2096, 10365), (2620, 8292), (2764, 7860), (3144, 6910), (3455, 6288), (3930, 5528), (4146, 5240)]