98479820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 211290240

約数和(自身を除く): 112810420

約数列:

[1, 2, 4, 5, 10, 20, 79, 157, 158, 314, 316, 395, 397, 628, 785, 790, 794, 1570, 1580, 1588, 1985, 3140, 3970, 7940, 12403, 24806, 31363, 49612, 62015, 62329, 62726, 124030, 124658, 125452, 156815, 248060, 249316, 311645, 313630, 623290, 627260, 1246580, 4923991, 9847982, 19695964, 24619955, 49239910, 98479820]

約数ペア:

[(1, 98479820), (2, 49239910), (4, 24619955), (5, 19695964), (10, 9847982), (20, 4923991), (79, 1246580), (157, 627260), (158, 623290), (314, 313630), (316, 311645), (395, 249316), (397, 248060), (628, 156815), (785, 125452), (790, 124658), (794, 124030), (1570, 62726), (1580, 62329), (1588, 62015), (1985, 49612), (3140, 31363), (3970, 24806), (7940, 12403)]