78128540

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{1627}}^1$

素因数の和:1664

約数の個数: 60

約数和(自身を含む): 191521176

約数和(自身を除く): 113392636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1627, 1715, 2401, 3254, 3430, 4802, 6508, 6860, 8135, 9604, 11389, 12005, 16270, 22778, 24010, 32540, 45556, 48020, 56945, 79723, 113890, 159446, 227780, 318892, 398615, 558061, 797230, 1116122, 1594460, 2232244, 2790305, 3906427, 5580610, 7812854, 11161220, 15625708, 19532135, 39064270, 78128540]

約数ペア:

[(1, 78128540), (2, 39064270), (4, 19532135), (5, 15625708), (7, 11161220), (10, 7812854), (14, 5580610), (20, 3906427), (28, 2790305), (35, 2232244), (49, 1594460), (70, 1116122), (98, 797230), (140, 558061), (196, 398615), (245, 318892), (343, 227780), (490, 159446), (686, 113890), (980, 79723), (1372, 56945), (1627, 48020), (1715, 45556), (2401, 32540), (3254, 24010), (3430, 22778), (4802, 16270), (6508, 12005), (6860, 11389), (8135, 9604)]