28091860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 60867072

約数和(自身を除く): 32775212

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 271, 284, 292, 355, 365, 542, 710, 730, 1084, 1355, 1420, 1460, 2710, 5183, 5420, 10366, 19241, 19783, 20732, 25915, 38482, 39566, 51830, 76964, 79132, 96205, 98915, 103660, 192410, 197830, 384820, 395660, 1404593, 2809186, 5618372, 7022965, 14045930, 28091860]

約数ペア:

[(1, 28091860), (2, 14045930), (4, 7022965), (5, 5618372), (10, 2809186), (20, 1404593), (71, 395660), (73, 384820), (142, 197830), (146, 192410), (271, 103660), (284, 98915), (292, 96205), (355, 79132), (365, 76964), (542, 51830), (710, 39566), (730, 38482), (1084, 25915), (1355, 20732), (1420, 19783), (1460, 19241), (2710, 10366), (5183, 5420)]