31090900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 71245440

約数和(自身を除く): 40154540

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 71, 100, 116, 142, 145, 151, 284, 290, 302, 355, 580, 604, 710, 725, 755, 1420, 1450, 1510, 1775, 2059, 2900, 3020, 3550, 3775, 4118, 4379, 7100, 7550, 8236, 8758, 10295, 10721, 15100, 17516, 20590, 21442, 21895, 41180, 42884, 43790, 51475, 53605, 87580, 102950, 107210, 109475, 205900, 214420, 218950, 268025, 310909, 437900, 536050, 621818, 1072100, 1243636, 1554545, 3109090, 6218180, 7772725, 15545450, 31090900]

約数ペア:

[(1, 31090900), (2, 15545450), (4, 7772725), (5, 6218180), (10, 3109090), (20, 1554545), (25, 1243636), (29, 1072100), (50, 621818), (58, 536050), (71, 437900), (100, 310909), (116, 268025), (142, 218950), (145, 214420), (151, 205900), (284, 109475), (290, 107210), (302, 102950), (355, 87580), (580, 53605), (604, 51475), (710, 43790), (725, 42884), (755, 41180), (1420, 21895), (1450, 21442), (1510, 20590), (1775, 17516), (2059, 15100), (2900, 10721), (3020, 10295), (3550, 8758), (3775, 8236), (4118, 7550), (4379, 7100)]