21112875

素因数分解:

$3^2\times 5^3\times 7^2\times {\mathrm{383}}^1$

素因数の和:418

約数の個数: 72

約数和(自身を含む): 44388864

約数和(自身を除く): 23275989

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 105, 125, 147, 175, 225, 245, 315, 375, 383, 441, 525, 735, 875, 1125, 1149, 1225, 1575, 1915, 2205, 2625, 2681, 3447, 3675, 5745, 6125, 7875, 8043, 9575, 11025, 13405, 17235, 18375, 18767, 24129, 28725, 40215, 47875, 55125, 56301, 67025, 86175, 93835, 120645, 143625, 168903, 201075, 281505, 335125, 430875, 469175, 603225, 844515, 1005375, 1407525, 2345875, 3016125, 4222575, 7037625, 21112875]

約数ペア:

[(1, 21112875), (3, 7037625), (5, 4222575), (7, 3016125), (9, 2345875), (15, 1407525), (21, 1005375), (25, 844515), (35, 603225), (45, 469175), (49, 430875), (63, 335125), (75, 281505), (105, 201075), (125, 168903), (147, 143625), (175, 120645), (225, 93835), (245, 86175), (315, 67025), (375, 56301), (383, 55125), (441, 47875), (525, 40215), (735, 28725), (875, 24129), (1125, 18767), (1149, 18375), (1225, 17235), (1575, 13405), (1915, 11025), (2205, 9575), (2625, 8043), (2681, 7875), (3447, 6125), (3675, 5745)]