21807408

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1583}}^1$

素因数の和:1642

約数の個数: 80

約数和(自身を含む): 65995776

約数和(自身を除く): 44188368

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 41, 42, 48, 56, 82, 84, 112, 123, 164, 168, 246, 287, 328, 336, 492, 574, 656, 861, 984, 1148, 1583, 1722, 1968, 2296, 3166, 3444, 4592, 4749, 6332, 6888, 9498, 11081, 12664, 13776, 18996, 22162, 25328, 33243, 37992, 44324, 64903, 66486, 75984, 88648, 129806, 132972, 177296, 194709, 259612, 265944, 389418, 454321, 519224, 531888, 778836, 908642, 1038448, 1362963, 1557672, 1817284, 2725926, 3115344, 3634568, 5451852, 7269136, 10903704, 21807408]

約数ペア:

[(1, 21807408), (2, 10903704), (3, 7269136), (4, 5451852), (6, 3634568), (7, 3115344), (8, 2725926), (12, 1817284), (14, 1557672), (16, 1362963), (21, 1038448), (24, 908642), (28, 778836), (41, 531888), (42, 519224), (48, 454321), (56, 389418), (82, 265944), (84, 259612), (112, 194709), (123, 177296), (164, 132972), (168, 129806), (246, 88648), (287, 75984), (328, 66486), (336, 64903), (492, 44324), (574, 37992), (656, 33243), (861, 25328), (984, 22162), (1148, 18996), (1583, 13776), (1722, 12664), (1968, 11081), (2296, 9498), (3166, 6888), (3444, 6332), (4592, 4749)]