19978152

素因数分解:

$2^3\times 3^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 52012800

約数和(自身を除く): 32034648

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 41, 79, 82, 123, 158, 164, 237, 246, 257, 316, 328, 474, 492, 514, 632, 771, 948, 984, 1028, 1542, 1896, 2056, 3084, 3239, 6168, 6478, 9717, 10537, 12956, 19434, 20303, 21074, 25912, 31611, 38868, 40606, 42148, 60909, 63222, 77736, 81212, 84296, 121818, 126444, 162424, 243636, 252888, 487272, 832423, 1664846, 2497269, 3329692, 4994538, 6659384, 9989076, 19978152]

約数ペア:

[(1, 19978152), (2, 9989076), (3, 6659384), (4, 4994538), (6, 3329692), (8, 2497269), (12, 1664846), (24, 832423), (41, 487272), (79, 252888), (82, 243636), (123, 162424), (158, 126444), (164, 121818), (237, 84296), (246, 81212), (257, 77736), (316, 63222), (328, 60909), (474, 42148), (492, 40606), (514, 38868), (632, 31611), (771, 25912), (948, 21074), (984, 20303), (1028, 19434), (1542, 12956), (1896, 10537), (2056, 9717), (3084, 6478), (3239, 6168)]