21393360

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{691}}^1$

素因数の和:753

約数の個数: 120

約数和(自身を含む): 73623264

約数和(自身を除く): 52229904

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 120, 129, 144, 172, 180, 215, 240, 258, 344, 360, 387, 430, 516, 645, 688, 691, 720, 774, 860, 1032, 1290, 1382, 1548, 1720, 1935, 2064, 2073, 2580, 2764, 3096, 3440, 3455, 3870, 4146, 5160, 5528, 6192, 6219, 6910, 7740, 8292, 10320, 10365, 11056, 12438, 13820, 15480, 16584, 20730, 24876, 27640, 29713, 30960, 31095, 33168, 41460, 49752, 55280, 59426, 62190, 82920, 89139, 99504, 118852, 124380, 148565, 165840, 178278, 237704, 248760, 267417, 297130, 356556, 445695, 475408, 497520, 534834, 594260, 713112, 891390, 1069668, 1188520, 1337085, 1426224, 1782780, 2139336, 2377040, 2674170, 3565560, 4278672, 5348340, 7131120, 10696680, 21393360]

約数ペア:

[(1, 21393360), (2, 10696680), (3, 7131120), (4, 5348340), (5, 4278672), (6, 3565560), (8, 2674170), (9, 2377040), (10, 2139336), (12, 1782780), (15, 1426224), (16, 1337085), (18, 1188520), (20, 1069668), (24, 891390), (30, 713112), (36, 594260), (40, 534834), (43, 497520), (45, 475408), (48, 445695), (60, 356556), (72, 297130), (80, 267417), (86, 248760), (90, 237704), (120, 178278), (129, 165840), (144, 148565), (172, 124380), (180, 118852), (215, 99504), (240, 89139), (258, 82920), (344, 62190), (360, 59426), (387, 55280), (430, 49752), (516, 41460), (645, 33168), (688, 31095), (691, 30960), (720, 29713), (774, 27640), (860, 24876), (1032, 20730), (1290, 16584), (1382, 15480), (1548, 13820), (1720, 12438), (1935, 11056), (2064, 10365), (2073, 10320), (2580, 8292), (2764, 7740), (3096, 6910), (3440, 6219), (3455, 6192), (3870, 5528), (4146, 5160)]