20801758

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:252

約数の個数: 32

約数和(自身を含む): 33708960

約数和(自身を除く): 12907202

約数列:

[1, 2, 29, 53, 58, 67, 101, 106, 134, 202, 1537, 1943, 2929, 3074, 3551, 3886, 5353, 5858, 6767, 7102, 10706, 13534, 102979, 155237, 196243, 205958, 310474, 358651, 392486, 717302, 10400879, 20801758]

約数ペア:

[(1, 20801758), (2, 10400879), (29, 717302), (53, 392486), (58, 358651), (67, 310474), (101, 205958), (106, 196243), (134, 155237), (202, 102979), (1537, 13534), (1943, 10706), (2929, 7102), (3074, 6767), (3551, 5858), (3886, 5353)]