13238840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{179}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 30666600

約数和(自身を除く): 17427760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 179, 215, 344, 358, 430, 716, 860, 895, 1432, 1720, 1790, 1849, 3580, 3698, 7160, 7396, 7697, 9245, 14792, 15394, 18490, 30788, 36980, 38485, 61576, 73960, 76970, 153940, 307880, 330971, 661942, 1323884, 1654855, 2647768, 3309710, 6619420, 13238840]

約数ペア:

[(1, 13238840), (2, 6619420), (4, 3309710), (5, 2647768), (8, 1654855), (10, 1323884), (20, 661942), (40, 330971), (43, 307880), (86, 153940), (172, 76970), (179, 73960), (215, 61576), (344, 38485), (358, 36980), (430, 30788), (716, 18490), (860, 15394), (895, 14792), (1432, 9245), (1720, 7697), (1790, 7396), (1849, 7160), (3580, 3698)]