28991620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1319}}^1$

素因数の和:1492

約数の個数: 48

約数和(自身を含む): 70076160

約数和(自身を除く): 41084540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1319, 1570, 2198, 2638, 3140, 4396, 5276, 5495, 6595, 9233, 10990, 13190, 18466, 21980, 26380, 36932, 46165, 92330, 184660, 207083, 414166, 828332, 1035415, 1449581, 2070830, 2899162, 4141660, 5798324, 7247905, 14495810, 28991620]

約数ペア:

[(1, 28991620), (2, 14495810), (4, 7247905), (5, 5798324), (7, 4141660), (10, 2899162), (14, 2070830), (20, 1449581), (28, 1035415), (35, 828332), (70, 414166), (140, 207083), (157, 184660), (314, 92330), (628, 46165), (785, 36932), (1099, 26380), (1319, 21980), (1570, 18466), (2198, 13190), (2638, 10990), (3140, 9233), (4396, 6595), (5276, 5495)]