15223720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 35925120

約数和(自身を除く): 20701400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 53, 86, 106, 167, 172, 212, 215, 265, 334, 344, 424, 430, 530, 668, 835, 860, 1060, 1336, 1670, 1720, 2120, 2279, 3340, 4558, 6680, 7181, 8851, 9116, 11395, 14362, 17702, 18232, 22790, 28724, 35404, 35905, 44255, 45580, 57448, 70808, 71810, 88510, 91160, 143620, 177020, 287240, 354040, 380593, 761186, 1522372, 1902965, 3044744, 3805930, 7611860, 15223720]

約数ペア:

[(1, 15223720), (2, 7611860), (4, 3805930), (5, 3044744), (8, 1902965), (10, 1522372), (20, 761186), (40, 380593), (43, 354040), (53, 287240), (86, 177020), (106, 143620), (167, 91160), (172, 88510), (212, 71810), (215, 70808), (265, 57448), (334, 45580), (344, 44255), (424, 35905), (430, 35404), (530, 28724), (668, 22790), (835, 18232), (860, 17702), (1060, 14362), (1336, 11395), (1670, 9116), (1720, 8851), (2120, 7181), (2279, 6680), (3340, 4558)]