78734680

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{37139}}^1$

素因数の和:37203

約数の個数: 32

約数和(自身を含む): 180500400

約数和(自身を除く): 101765720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 37139, 74278, 148556, 185695, 297112, 371390, 742780, 1485560, 1968367, 3936734, 7873468, 9841835, 15746936, 19683670, 39367340, 78734680]

約数ペア:

[(1, 78734680), (2, 39367340), (4, 19683670), (5, 15746936), (8, 9841835), (10, 7873468), (20, 3936734), (40, 1968367), (53, 1485560), (106, 742780), (212, 371390), (265, 297112), (424, 185695), (530, 148556), (1060, 74278), (2120, 37139)]