128214640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22573}}^1$

素因数の和:22657

約数の個数: 40

約数和(自身を含む): 302311008

約数和(自身を除く): 174096368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 22573, 45146, 90292, 112865, 180584, 225730, 361168, 451460, 902920, 1602683, 1805840, 3205366, 6410732, 8013415, 12821464, 16026830, 25642928, 32053660, 64107320, 128214640]

約数ペア:

[(1, 128214640), (2, 64107320), (4, 32053660), (5, 25642928), (8, 16026830), (10, 12821464), (16, 8013415), (20, 6410732), (40, 3205366), (71, 1805840), (80, 1602683), (142, 902920), (284, 451460), (355, 361168), (568, 225730), (710, 180584), (1136, 112865), (1420, 90292), (2840, 45146), (5680, 22573)]