98978980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{13709}}^1$

素因数の和:13756

約数の個数: 36

約数和(自身を含む): 219387420

約数和(自身を除く): 120408440

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 13709, 27418, 54836, 68545, 137090, 260471, 274180, 520942, 1041884, 1302355, 2604710, 4948949, 5209420, 9897898, 19795796, 24744745, 49489490, 98978980]

約数ペア:

[(1, 98978980), (2, 49489490), (4, 24744745), (5, 19795796), (10, 9897898), (19, 5209420), (20, 4948949), (38, 2604710), (76, 1302355), (95, 1041884), (190, 520942), (361, 274180), (380, 260471), (722, 137090), (1444, 68545), (1805, 54836), (3610, 27418), (7220, 13709)]