20512781500

素因数分解:

$2^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{409}}^1\times {\mathrm{2711}}^1$

素因数の和:3176

約数の個数: 96

約数和(自身を含む): 46140232320

約数和(自身を除く): 25627450820

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 250, 370, 409, 500, 740, 818, 925, 1636, 1850, 2045, 2711, 3700, 4090, 4625, 5422, 8180, 9250, 10225, 10844, 13555, 15133, 18500, 20450, 27110, 30266, 40900, 51125, 54220, 60532, 67775, 75665, 100307, 102250, 135550, 151330, 200614, 204500, 271100, 302660, 338875, 378325, 401228, 501535, 677750, 756650, 1003070, 1108799, 1355500, 1513300, 1891625, 2006140, 2217598, 2507675, 3783250, 4435196, 5015350, 5543995, 7566500, 10030700, 11087990, 12538375, 22175980, 25076750, 27719975, 41025563, 50153500, 55439950, 82051126, 110879900, 138599875, 164102252, 205127815, 277199750, 410255630, 554399500, 820511260, 1025639075, 2051278150, 4102556300, 5128195375, 10256390750, 20512781500]

約数ペア:

[(1, 20512781500), (2, 10256390750), (4, 5128195375), (5, 4102556300), (10, 2051278150), (20, 1025639075), (25, 820511260), (37, 554399500), (50, 410255630), (74, 277199750), (100, 205127815), (125, 164102252), (148, 138599875), (185, 110879900), (250, 82051126), (370, 55439950), (409, 50153500), (500, 41025563), (740, 27719975), (818, 25076750), (925, 22175980), (1636, 12538375), (1850, 11087990), (2045, 10030700), (2711, 7566500), (3700, 5543995), (4090, 5015350), (4625, 4435196), (5422, 3783250), (8180, 2507675), (9250, 2217598), (10225, 2006140), (10844, 1891625), (13555, 1513300), (15133, 1355500), (18500, 1108799), (20450, 1003070), (27110, 756650), (30266, 677750), (40900, 501535), (51125, 401228), (54220, 378325), (60532, 338875), (67775, 302660), (75665, 271100), (100307, 204500), (102250, 200614), (135550, 151330)]