28115960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 67651200

約数和(自身を除く): 39535240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 173, 239, 340, 346, 478, 680, 692, 865, 956, 1195, 1384, 1730, 1912, 2390, 2941, 3460, 4063, 4780, 5882, 6920, 8126, 9560, 11764, 14705, 16252, 20315, 23528, 29410, 32504, 40630, 41347, 58820, 81260, 82694, 117640, 162520, 165388, 206735, 330776, 413470, 702899, 826940, 1405798, 1653880, 2811596, 3514495, 5623192, 7028990, 14057980, 28115960]

約数ペア:

[(1, 28115960), (2, 14057980), (4, 7028990), (5, 5623192), (8, 3514495), (10, 2811596), (17, 1653880), (20, 1405798), (34, 826940), (40, 702899), (68, 413470), (85, 330776), (136, 206735), (170, 165388), (173, 162520), (239, 117640), (340, 82694), (346, 81260), (478, 58820), (680, 41347), (692, 40630), (865, 32504), (956, 29410), (1195, 23528), (1384, 20315), (1730, 16252), (1912, 14705), (2390, 11764), (2941, 9560), (3460, 8126), (4063, 6920), (4780, 5882)]