30408280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{487}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 78704640

約数和(自身を除く): 48296360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 223, 280, 446, 487, 892, 974, 1115, 1561, 1784, 1948, 2230, 2435, 3122, 3409, 3896, 4460, 4870, 6244, 6818, 7805, 8920, 9740, 12488, 13636, 15610, 17045, 19480, 27272, 31220, 34090, 62440, 68180, 108601, 136360, 217202, 434404, 543005, 760207, 868808, 1086010, 1520414, 2172020, 3040828, 3801035, 4344040, 6081656, 7602070, 15204140, 30408280]

約数ペア:

[(1, 30408280), (2, 15204140), (4, 7602070), (5, 6081656), (7, 4344040), (8, 3801035), (10, 3040828), (14, 2172020), (20, 1520414), (28, 1086010), (35, 868808), (40, 760207), (56, 543005), (70, 434404), (140, 217202), (223, 136360), (280, 108601), (446, 68180), (487, 62440), (892, 34090), (974, 31220), (1115, 27272), (1561, 19480), (1784, 17045), (1948, 15610), (2230, 13636), (2435, 12488), (3122, 9740), (3409, 8920), (3896, 7805), (4460, 6818), (4870, 6244)]