840021

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 1467648

約数和(自身を除く): 627627

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 181, 221, 273, 357, 543, 663, 1267, 1547, 2353, 3077, 3801, 4641, 7059, 9231, 16471, 21539, 40001, 49413, 64617, 120003, 280007, 840021]

約数ペア:

[(1, 840021), (3, 280007), (7, 120003), (13, 64617), (17, 49413), (21, 40001), (39, 21539), (51, 16471), (91, 9231), (119, 7059), (181, 4641), (221, 3801), (273, 3077), (357, 2353), (543, 1547), (663, 1267)]