28666188

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:511

約数の個数: 72

約数和(自身を含む): 76658400

約数和(自身を除く): 47992212

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 89, 92, 138, 178, 207, 267, 276, 356, 389, 414, 534, 778, 801, 828, 1068, 1167, 1556, 1602, 2047, 2334, 3204, 3501, 4094, 4668, 6141, 7002, 8188, 8947, 12282, 14004, 17894, 18423, 24564, 26841, 34621, 35788, 36846, 53682, 69242, 73692, 80523, 103863, 107364, 138484, 161046, 207726, 311589, 322092, 415452, 623178, 796283, 1246356, 1592566, 2388849, 3185132, 4777698, 7166547, 9555396, 14333094, 28666188]

約数ペア:

[(1, 28666188), (2, 14333094), (3, 9555396), (4, 7166547), (6, 4777698), (9, 3185132), (12, 2388849), (18, 1592566), (23, 1246356), (36, 796283), (46, 623178), (69, 415452), (89, 322092), (92, 311589), (138, 207726), (178, 161046), (207, 138484), (267, 107364), (276, 103863), (356, 80523), (389, 73692), (414, 69242), (534, 53682), (778, 36846), (801, 35788), (828, 34621), (1068, 26841), (1167, 24564), (1556, 18423), (1602, 17894), (2047, 14004), (2334, 12282), (3204, 8947), (3501, 8188), (4094, 7002), (4668, 6141)]