21388160

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1453}}^1$

素因数の和:1495

約数の個数: 64

約数和(自身を含む): 53390880

約数和(自身を除く): 32002720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1453, 1472, 1840, 2906, 2944, 3680, 5812, 7265, 7360, 11624, 14530, 14720, 23248, 29060, 33419, 46496, 58120, 66838, 92992, 116240, 133676, 167095, 185984, 232480, 267352, 334190, 464960, 534704, 668380, 929920, 1069408, 1336760, 2138816, 2673520, 4277632, 5347040, 10694080, 21388160]

約数ペア:

[(1, 21388160), (2, 10694080), (4, 5347040), (5, 4277632), (8, 2673520), (10, 2138816), (16, 1336760), (20, 1069408), (23, 929920), (32, 668380), (40, 534704), (46, 464960), (64, 334190), (80, 267352), (92, 232480), (115, 185984), (128, 167095), (160, 133676), (184, 116240), (230, 92992), (320, 66838), (368, 58120), (460, 46496), (640, 33419), (736, 29060), (920, 23248), (1453, 14720), (1472, 14530), (1840, 11624), (2906, 7360), (2944, 7265), (3680, 5812)]