28909680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{739}}^1$

素因数の和:918

約数の個数: 80

約数和(自身を含む): 90291840

約数和(自身を除く): 61382160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 652, 739, 815, 978, 1304, 1478, 1630, 1956, 2217, 2445, 2608, 2956, 3260, 3695, 3912, 4434, 4890, 5912, 6520, 7390, 7824, 8868, 9780, 11085, 11824, 13040, 14780, 17736, 19560, 22170, 29560, 35472, 39120, 44340, 59120, 88680, 120457, 177360, 240914, 361371, 481828, 602285, 722742, 963656, 1204570, 1445484, 1806855, 1927312, 2409140, 2890968, 3613710, 4818280, 5781936, 7227420, 9636560, 14454840, 28909680]

約数ペア:

[(1, 28909680), (2, 14454840), (3, 9636560), (4, 7227420), (5, 5781936), (6, 4818280), (8, 3613710), (10, 2890968), (12, 2409140), (15, 1927312), (16, 1806855), (20, 1445484), (24, 1204570), (30, 963656), (40, 722742), (48, 602285), (60, 481828), (80, 361371), (120, 240914), (163, 177360), (240, 120457), (326, 88680), (489, 59120), (652, 44340), (739, 39120), (815, 35472), (978, 29560), (1304, 22170), (1478, 19560), (1630, 17736), (1956, 14780), (2217, 13040), (2445, 11824), (2608, 11085), (2956, 9780), (3260, 8868), (3695, 7824), (3912, 7390), (4434, 6520), (4890, 5912)]