28988680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5449}}^1$

素因数の和:5486

約数の個数: 64

約数和(自身を含む): 78480000

約数和(自身を除く): 49491320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 5320, 5449, 10898, 21796, 27245, 38143, 43592, 54490, 76286, 103531, 108980, 152572, 190715, 207062, 217960, 305144, 381430, 414124, 517655, 724717, 762860, 828248, 1035310, 1449434, 1525720, 2070620, 2898868, 3623585, 4141240, 5797736, 7247170, 14494340, 28988680]

約数ペア:

[(1, 28988680), (2, 14494340), (4, 7247170), (5, 5797736), (7, 4141240), (8, 3623585), (10, 2898868), (14, 2070620), (19, 1525720), (20, 1449434), (28, 1035310), (35, 828248), (38, 762860), (40, 724717), (56, 517655), (70, 414124), (76, 381430), (95, 305144), (133, 217960), (140, 207062), (152, 190715), (190, 152572), (266, 108980), (280, 103531), (380, 76286), (532, 54490), (665, 43592), (760, 38143), (1064, 27245), (1330, 21796), (2660, 10898), (5320, 5449)]