21570159

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 32739840

約数和(自身を除く): 11169681

約数列:

[1, 3, 13, 23, 39, 69, 139, 173, 299, 417, 519, 897, 1807, 2249, 3197, 3979, 5421, 6747, 9591, 11937, 24047, 41561, 51727, 72141, 124683, 155181, 312611, 553081, 937833, 1659243, 7190053, 21570159]

約数ペア:

[(1, 21570159), (3, 7190053), (13, 1659243), (23, 937833), (39, 553081), (69, 312611), (139, 155181), (173, 124683), (299, 72141), (417, 51727), (519, 41561), (897, 24047), (1807, 11937), (2249, 9591), (3197, 6747), (3979, 5421)]