20852975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 32081280

約数和(自身を除く): 11228305

約数列:

[1, 5, 11, 13, 19, 25, 55, 65, 95, 143, 209, 247, 275, 307, 325, 475, 715, 1045, 1235, 1535, 2717, 3377, 3575, 3991, 5225, 5833, 6175, 7675, 13585, 16885, 19955, 29165, 43901, 64163, 67925, 75829, 84425, 99775, 145825, 219505, 320815, 379145, 834119, 1097525, 1604075, 1895725, 4170595, 20852975]

約数ペア:

[(1, 20852975), (5, 4170595), (11, 1895725), (13, 1604075), (19, 1097525), (25, 834119), (55, 379145), (65, 320815), (95, 219505), (143, 145825), (209, 99775), (247, 84425), (275, 75829), (307, 67925), (325, 64163), (475, 43901), (715, 29165), (1045, 19955), (1235, 16885), (1535, 13585), (2717, 7675), (3377, 6175), (3575, 5833), (3991, 5225)]