28957020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{991}}^1$

素因数の和:1490

約数の個数: 48

約数和(自身を含む): 81328128

約数和(自身を除く): 52371108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 487, 974, 991, 1461, 1948, 1982, 2435, 2922, 2973, 3964, 4870, 4955, 5844, 5946, 7305, 9740, 9910, 11892, 14610, 14865, 19820, 29220, 29730, 59460, 482617, 965234, 1447851, 1930468, 2413085, 2895702, 4826170, 5791404, 7239255, 9652340, 14478510, 28957020]

約数ペア:

[(1, 28957020), (2, 14478510), (3, 9652340), (4, 7239255), (5, 5791404), (6, 4826170), (10, 2895702), (12, 2413085), (15, 1930468), (20, 1447851), (30, 965234), (60, 482617), (487, 59460), (974, 29730), (991, 29220), (1461, 19820), (1948, 14865), (1982, 14610), (2435, 11892), (2922, 9910), (2973, 9740), (3964, 7305), (4870, 5946), (4955, 5844)]