18712460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71971}}^1$

素因数の和:71993

約数の個数: 24

約数和(自身を含む): 42319536

約数和(自身を除く): 23607076

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71971, 143942, 287884, 359855, 719710, 935623, 1439420, 1871246, 3742492, 4678115, 9356230, 18712460]

約数ペア:

[(1, 18712460), (2, 9356230), (4, 4678115), (5, 3742492), (10, 1871246), (13, 1439420), (20, 935623), (26, 719710), (52, 359855), (65, 287884), (130, 143942), (260, 71971)]