21399844825

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1\times {\mathrm{827}}^1$

素因数の和:1234

約数の個数: 48

約数和(自身を含む): 27726368256

約数和(自身を除く): 6326523431

約数列:

[1, 5, 25, 31, 155, 173, 193, 775, 827, 865, 965, 4135, 4325, 4825, 5363, 5983, 20675, 25637, 26815, 29915, 33389, 128185, 134075, 143071, 149575, 159611, 166945, 640925, 715355, 798055, 834725, 1035059, 3576775, 3990275, 4435201, 4947941, 5175295, 22176005, 24739705, 25876475, 27612703, 110880025, 123698525, 138063515, 690317575, 855993793, 4279968965, 21399844825]

約数ペア:

[(1, 21399844825), (5, 4279968965), (25, 855993793), (31, 690317575), (155, 138063515), (173, 123698525), (193, 110880025), (775, 27612703), (827, 25876475), (865, 24739705), (965, 22176005), (4135, 5175295), (4325, 4947941), (4825, 4435201), (5363, 3990275), (5983, 3576775), (20675, 1035059), (25637, 834725), (26815, 798055), (29915, 715355), (33389, 640925), (128185, 166945), (134075, 159611), (143071, 149575)]