21312810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7639}}^1$

素因数の和:7683

約数の個数: 48

約数和(自身を含む): 57208320

約数和(自身を除く): 35895510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7639, 15278, 22917, 38195, 45834, 68751, 76390, 114585, 137502, 229170, 236809, 343755, 473618, 687510, 710427, 1184045, 1420854, 2131281, 2368090, 3552135, 4262562, 7104270, 10656405, 21312810]

約数ペア:

[(1, 21312810), (2, 10656405), (3, 7104270), (5, 4262562), (6, 3552135), (9, 2368090), (10, 2131281), (15, 1420854), (18, 1184045), (30, 710427), (31, 687510), (45, 473618), (62, 343755), (90, 236809), (93, 229170), (155, 137502), (186, 114585), (279, 76390), (310, 68751), (465, 45834), (558, 38195), (930, 22917), (1395, 15278), (2790, 7639)]