18397731

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 27848448

約数和(自身を除く): 9450717

約数列:

[1, 3, 11, 33, 53, 67, 157, 159, 201, 471, 583, 737, 1727, 1749, 2211, 3551, 5181, 8321, 10519, 10653, 24963, 31557, 39061, 91531, 115709, 117183, 274593, 347127, 557507, 1672521, 6132577, 18397731]

約数ペア:

[(1, 18397731), (3, 6132577), (11, 1672521), (33, 557507), (53, 347127), (67, 274593), (157, 117183), (159, 115709), (201, 91531), (471, 39061), (583, 31557), (737, 24963), (1727, 10653), (1749, 10519), (2211, 8321), (3551, 5181)]