78898880

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3121}}^1$

素因数の和:3217

約数の個数: 56

約数和(自身を含む): 190317120

約数和(自身を除く): 111418240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 3121, 3160, 5056, 6242, 6320, 12484, 12640, 15605, 24968, 25280, 31210, 49936, 62420, 99872, 124840, 199744, 246559, 249680, 493118, 499360, 986236, 998720, 1232795, 1972472, 2465590, 3944944, 4931180, 7889888, 9862360, 15779776, 19724720, 39449440, 78898880]

約数ペア:

[(1, 78898880), (2, 39449440), (4, 19724720), (5, 15779776), (8, 9862360), (10, 7889888), (16, 4931180), (20, 3944944), (32, 2465590), (40, 1972472), (64, 1232795), (79, 998720), (80, 986236), (158, 499360), (160, 493118), (316, 249680), (320, 246559), (395, 199744), (632, 124840), (790, 99872), (1264, 62420), (1580, 49936), (2528, 31210), (3121, 25280), (3160, 24968), (5056, 15605), (6242, 12640), (6320, 12484)]