18993964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 39070080

約数和(自身を除く): 20076116

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 67, 68, 134, 187, 268, 374, 379, 737, 748, 758, 1139, 1474, 1516, 2278, 2948, 4169, 4556, 6443, 8338, 12529, 12886, 16676, 25058, 25393, 25772, 50116, 50786, 70873, 101572, 141746, 279323, 283492, 431681, 558646, 863362, 1117292, 1726724, 4748491, 9496982, 18993964]

約数ペア:

[(1, 18993964), (2, 9496982), (4, 4748491), (11, 1726724), (17, 1117292), (22, 863362), (34, 558646), (44, 431681), (67, 283492), (68, 279323), (134, 141746), (187, 101572), (268, 70873), (374, 50786), (379, 50116), (737, 25772), (748, 25393), (758, 25058), (1139, 16676), (1474, 12886), (1516, 12529), (2278, 8338), (2948, 6443), (4169, 4556)]