15211240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 22528280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 181, 191, 220, 362, 382, 440, 724, 764, 905, 955, 1448, 1528, 1810, 1910, 1991, 2101, 3620, 3820, 3982, 4202, 7240, 7640, 7964, 8404, 9955, 10505, 15928, 16808, 19910, 21010, 34571, 39820, 42020, 69142, 79640, 84040, 138284, 172855, 276568, 345710, 380281, 691420, 760562, 1382840, 1521124, 1901405, 3042248, 3802810, 7605620, 15211240]

約数ペア:

[(1, 15211240), (2, 7605620), (4, 3802810), (5, 3042248), (8, 1901405), (10, 1521124), (11, 1382840), (20, 760562), (22, 691420), (40, 380281), (44, 345710), (55, 276568), (88, 172855), (110, 138284), (181, 84040), (191, 79640), (220, 69142), (362, 42020), (382, 39820), (440, 34571), (724, 21010), (764, 19910), (905, 16808), (955, 15928), (1448, 10505), (1528, 9955), (1810, 8404), (1910, 7964), (1991, 7640), (2101, 7240), (3620, 4202), (3820, 3982)]