18990795

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 31752000

約数和(自身を除く): 12761205

約数列:

[1, 3, 5, 15, 29, 87, 145, 149, 293, 435, 447, 745, 879, 1465, 2235, 4321, 4395, 8497, 12963, 21605, 25491, 42485, 43657, 64815, 127455, 130971, 218285, 654855, 1266053, 3798159, 6330265, 18990795]

約数ペア:

[(1, 18990795), (3, 6330265), (5, 3798159), (15, 1266053), (29, 654855), (87, 218285), (145, 130971), (149, 127455), (293, 64815), (435, 43657), (447, 42485), (745, 25491), (879, 21605), (1465, 12963), (2235, 8497), (4321, 4395)]