20542431

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1601}}^1$

素因数の和:1671

約数の個数: 32

約数和(自身を含む): 34449408

約数和(自身を除く): 13906977

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 141, 273, 329, 611, 987, 1601, 1833, 4277, 4803, 11207, 12831, 20813, 33621, 62439, 75247, 145691, 225741, 437073, 526729, 978211, 1580187, 2934633, 6847477, 20542431]

約数ペア:

[(1, 20542431), (3, 6847477), (7, 2934633), (13, 1580187), (21, 978211), (39, 526729), (47, 437073), (91, 225741), (141, 145691), (273, 75247), (329, 62439), (611, 33621), (987, 20813), (1601, 12831), (1833, 11207), (4277, 4803)]