20287256

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 24502504

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 71, 88, 136, 142, 187, 191, 284, 374, 382, 568, 748, 764, 781, 1207, 1496, 1528, 1562, 2101, 2414, 3124, 3247, 4202, 4828, 6248, 6494, 8404, 9656, 12988, 13277, 13561, 16808, 25976, 26554, 27122, 35717, 53108, 54244, 71434, 106216, 108488, 142868, 149171, 230537, 285736, 298342, 461074, 596684, 922148, 1193368, 1844296, 2535907, 5071814, 10143628, 20287256]

約数ペア:

[(1, 20287256), (2, 10143628), (4, 5071814), (8, 2535907), (11, 1844296), (17, 1193368), (22, 922148), (34, 596684), (44, 461074), (68, 298342), (71, 285736), (88, 230537), (136, 149171), (142, 142868), (187, 108488), (191, 106216), (284, 71434), (374, 54244), (382, 53108), (568, 35717), (748, 27122), (764, 26554), (781, 25976), (1207, 16808), (1496, 13561), (1528, 13277), (1562, 12988), (2101, 9656), (2414, 8404), (3124, 6494), (3247, 6248), (4202, 4828)]