64431440

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{3517}}^1$

素因数の和:3759

約数の個数: 40

約数和(自身を含む): 150500040

約数和(自身を除く): 86068600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 458, 916, 1145, 1832, 2290, 3517, 3664, 4580, 7034, 9160, 14068, 17585, 18320, 28136, 35170, 56272, 70340, 140680, 281360, 805393, 1610786, 3221572, 4026965, 6443144, 8053930, 12886288, 16107860, 32215720, 64431440]

約数ペア:

[(1, 64431440), (2, 32215720), (4, 16107860), (5, 12886288), (8, 8053930), (10, 6443144), (16, 4026965), (20, 3221572), (40, 1610786), (80, 805393), (229, 281360), (458, 140680), (916, 70340), (1145, 56272), (1832, 35170), (2290, 28136), (3517, 18320), (3664, 17585), (4580, 14068), (7034, 9160)]