20169680

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:204

約数の個数: 80

約数和(自身を含む): 49175424

約数和(自身を除く): 29005744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 67, 71, 80, 106, 134, 142, 212, 265, 268, 284, 335, 355, 424, 530, 536, 568, 670, 710, 848, 1060, 1072, 1136, 1340, 1420, 2120, 2680, 2840, 3551, 3763, 4240, 4757, 5360, 5680, 7102, 7526, 9514, 14204, 15052, 17755, 18815, 19028, 23785, 28408, 30104, 35510, 37630, 38056, 47570, 56816, 60208, 71020, 75260, 76112, 95140, 142040, 150520, 190280, 252121, 284080, 301040, 380560, 504242, 1008484, 1260605, 2016968, 2521210, 4033936, 5042420, 10084840, 20169680]

約数ペア:

[(1, 20169680), (2, 10084840), (4, 5042420), (5, 4033936), (8, 2521210), (10, 2016968), (16, 1260605), (20, 1008484), (40, 504242), (53, 380560), (67, 301040), (71, 284080), (80, 252121), (106, 190280), (134, 150520), (142, 142040), (212, 95140), (265, 76112), (268, 75260), (284, 71020), (335, 60208), (355, 56816), (424, 47570), (530, 38056), (536, 37630), (568, 35510), (670, 30104), (710, 28408), (848, 23785), (1060, 19028), (1072, 18815), (1136, 17755), (1340, 15052), (1420, 14204), (2120, 9514), (2680, 7526), (2840, 7102), (3551, 5680), (3763, 5360), (4240, 4757)]