21068970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{607}}^1$

素因数の和:719

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 34088790

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 89, 130, 178, 195, 267, 390, 445, 534, 607, 890, 1157, 1214, 1335, 1821, 2314, 2670, 3035, 3471, 3642, 5785, 6070, 6942, 7891, 9105, 11570, 15782, 17355, 18210, 23673, 34710, 39455, 47346, 54023, 78910, 108046, 118365, 162069, 236730, 270115, 324138, 540230, 702299, 810345, 1404598, 1620690, 2106897, 3511495, 4213794, 7022990, 10534485, 21068970]

約数ペア:

[(1, 21068970), (2, 10534485), (3, 7022990), (5, 4213794), (6, 3511495), (10, 2106897), (13, 1620690), (15, 1404598), (26, 810345), (30, 702299), (39, 540230), (65, 324138), (78, 270115), (89, 236730), (130, 162069), (178, 118365), (195, 108046), (267, 78910), (390, 54023), (445, 47346), (534, 39455), (607, 34710), (890, 23673), (1157, 18210), (1214, 17355), (1335, 15782), (1821, 11570), (2314, 9105), (2670, 7891), (3035, 6942), (3471, 6070), (3642, 5785)]