20477360

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:426

約数の個数: 80

約数和(自身を含む): 51425280

約数和(自身を除く): 30947920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 359, 368, 460, 496, 620, 713, 718, 920, 1240, 1426, 1436, 1795, 1840, 2480, 2852, 2872, 3565, 3590, 5704, 5744, 7130, 7180, 8257, 11129, 11408, 14260, 14360, 16514, 22258, 28520, 28720, 33028, 41285, 44516, 55645, 57040, 66056, 82570, 89032, 111290, 132112, 165140, 178064, 222580, 255967, 330280, 445160, 511934, 660560, 890320, 1023868, 1279835, 2047736, 2559670, 4095472, 5119340, 10238680, 20477360]

約数ペア:

[(1, 20477360), (2, 10238680), (4, 5119340), (5, 4095472), (8, 2559670), (10, 2047736), (16, 1279835), (20, 1023868), (23, 890320), (31, 660560), (40, 511934), (46, 445160), (62, 330280), (80, 255967), (92, 222580), (115, 178064), (124, 165140), (155, 132112), (184, 111290), (230, 89032), (248, 82570), (310, 66056), (359, 57040), (368, 55645), (460, 44516), (496, 41285), (620, 33028), (713, 28720), (718, 28520), (920, 22258), (1240, 16514), (1426, 14360), (1436, 14260), (1795, 11408), (1840, 11129), (2480, 8257), (2852, 7180), (2872, 7130), (3565, 5744), (3590, 5704)]