21118130

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{563}}^1$

素因数の和:623

約数の個数: 48

約数和(自身を含む): 43206912

約数和(自身を除く): 22088782

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 121, 155, 242, 310, 341, 563, 605, 682, 1126, 1210, 1705, 2815, 3410, 3751, 5630, 6193, 7502, 12386, 17453, 18755, 30965, 34906, 37510, 61930, 68123, 87265, 136246, 174530, 191983, 340615, 383966, 681230, 959915, 1919830, 2111813, 4223626, 10559065, 21118130]

約数ペア:

[(1, 21118130), (2, 10559065), (5, 4223626), (10, 2111813), (11, 1919830), (22, 959915), (31, 681230), (55, 383966), (62, 340615), (110, 191983), (121, 174530), (155, 136246), (242, 87265), (310, 68123), (341, 61930), (563, 37510), (605, 34906), (682, 30965), (1126, 18755), (1210, 17453), (1705, 12386), (2815, 7502), (3410, 6193), (3751, 5630)]