19956620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 43491168

約数和(自身を除く): 23534548

約数列:

[1, 2, 4, 5, 10, 20, 53, 67, 106, 134, 212, 265, 268, 281, 335, 530, 562, 670, 1060, 1124, 1340, 1405, 2810, 3551, 5620, 7102, 14204, 14893, 17755, 18827, 29786, 35510, 37654, 59572, 71020, 74465, 75308, 94135, 148930, 188270, 297860, 376540, 997831, 1995662, 3991324, 4989155, 9978310, 19956620]

約数ペア:

[(1, 19956620), (2, 9978310), (4, 4989155), (5, 3991324), (10, 1995662), (20, 997831), (53, 376540), (67, 297860), (106, 188270), (134, 148930), (212, 94135), (265, 75308), (268, 74465), (281, 71020), (335, 59572), (530, 37654), (562, 35510), (670, 29786), (1060, 18827), (1124, 17755), (1340, 14893), (1405, 14204), (2810, 7102), (3551, 5620)]