21152916

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{433}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 56871360

約数和(自身を除く): 35718444

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 59, 69, 92, 118, 138, 177, 207, 236, 276, 354, 414, 433, 531, 708, 828, 866, 1062, 1299, 1357, 1732, 2124, 2598, 2714, 3897, 4071, 5196, 5428, 7794, 8142, 9959, 12213, 15588, 16284, 19918, 24426, 25547, 29877, 39836, 48852, 51094, 59754, 76641, 89631, 102188, 119508, 153282, 179262, 229923, 306564, 358524, 459846, 587581, 919692, 1175162, 1762743, 2350324, 3525486, 5288229, 7050972, 10576458, 21152916]

約数ペア:

[(1, 21152916), (2, 10576458), (3, 7050972), (4, 5288229), (6, 3525486), (9, 2350324), (12, 1762743), (18, 1175162), (23, 919692), (36, 587581), (46, 459846), (59, 358524), (69, 306564), (92, 229923), (118, 179262), (138, 153282), (177, 119508), (207, 102188), (236, 89631), (276, 76641), (354, 59754), (414, 51094), (433, 48852), (531, 39836), (708, 29877), (828, 25547), (866, 24426), (1062, 19918), (1299, 16284), (1357, 15588), (1732, 12213), (2124, 9959), (2598, 8142), (2714, 7794), (3897, 5428), (4071, 5196)]