28478440

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{3109}}^1$

素因数の和:3349

約数の個数: 32

約数和(自身を含む): 64377000

約数和(自身を除く): 35898560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2290, 3109, 4580, 6218, 9160, 12436, 15545, 24872, 31090, 62180, 124360, 711961, 1423922, 2847844, 3559805, 5695688, 7119610, 14239220, 28478440]

約数ペア:

[(1, 28478440), (2, 14239220), (4, 7119610), (5, 5695688), (8, 3559805), (10, 2847844), (20, 1423922), (40, 711961), (229, 124360), (458, 62180), (916, 31090), (1145, 24872), (1832, 15545), (2290, 12436), (3109, 9160), (4580, 6218)]