81756350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1723}}^1$

素因数の和:1821

約数の個数: 48

約数和(自身を含む): 166103952

約数和(自身を除く): 84347602

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 650, 730, 949, 1723, 1825, 1898, 3446, 3650, 4745, 8615, 9490, 17230, 22399, 23725, 43075, 44798, 47450, 86150, 111995, 125779, 223990, 251558, 559975, 628895, 1119950, 1257790, 1635127, 3144475, 3270254, 6288950, 8175635, 16351270, 40878175, 81756350]

約数ペア:

[(1, 81756350), (2, 40878175), (5, 16351270), (10, 8175635), (13, 6288950), (25, 3270254), (26, 3144475), (50, 1635127), (65, 1257790), (73, 1119950), (130, 628895), (146, 559975), (325, 251558), (365, 223990), (650, 125779), (730, 111995), (949, 86150), (1723, 47450), (1825, 44798), (1898, 43075), (3446, 23725), (3650, 22399), (4745, 17230), (8615, 9490)]