21285240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1993}}^1$

素因数の和:2096

約数の個数: 64

約数和(自身を含む): 64605600

約数和(自身を除く): 43320360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 89, 120, 178, 267, 356, 445, 534, 712, 890, 1068, 1335, 1780, 1993, 2136, 2670, 3560, 3986, 5340, 5979, 7972, 9965, 10680, 11958, 15944, 19930, 23916, 29895, 39860, 47832, 59790, 79720, 119580, 177377, 239160, 354754, 532131, 709508, 886885, 1064262, 1419016, 1773770, 2128524, 2660655, 3547540, 4257048, 5321310, 7095080, 10642620, 21285240]

約数ペア:

[(1, 21285240), (2, 10642620), (3, 7095080), (4, 5321310), (5, 4257048), (6, 3547540), (8, 2660655), (10, 2128524), (12, 1773770), (15, 1419016), (20, 1064262), (24, 886885), (30, 709508), (40, 532131), (60, 354754), (89, 239160), (120, 177377), (178, 119580), (267, 79720), (356, 59790), (445, 47832), (534, 39860), (712, 29895), (890, 23916), (1068, 19930), (1335, 15944), (1780, 11958), (1993, 10680), (2136, 9965), (2670, 7972), (3560, 5979), (3986, 5340)]