20442950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:174

約数の個数: 72

約数和(自身を含む): 43538880

約数和(自身を除く): 23095930

約数列:

[1, 2, 5, 10, 11, 22, 25, 31, 50, 55, 62, 109, 110, 121, 155, 218, 242, 275, 310, 341, 545, 550, 605, 682, 775, 1090, 1199, 1210, 1550, 1705, 2398, 2725, 3025, 3379, 3410, 3751, 5450, 5995, 6050, 6758, 7502, 8525, 11990, 13189, 16895, 17050, 18755, 26378, 29975, 33790, 37169, 37510, 59950, 65945, 74338, 84475, 93775, 131890, 168950, 185845, 187550, 329725, 371690, 408859, 659450, 817718, 929225, 1858450, 2044295, 4088590, 10221475, 20442950]

約数ペア:

[(1, 20442950), (2, 10221475), (5, 4088590), (10, 2044295), (11, 1858450), (22, 929225), (25, 817718), (31, 659450), (50, 408859), (55, 371690), (62, 329725), (109, 187550), (110, 185845), (121, 168950), (155, 131890), (218, 93775), (242, 84475), (275, 74338), (310, 65945), (341, 59950), (545, 37510), (550, 37169), (605, 33790), (682, 29975), (775, 26378), (1090, 18755), (1199, 17050), (1210, 16895), (1550, 13189), (1705, 11990), (2398, 8525), (2725, 7502), (3025, 6758), (3379, 6050), (3410, 5995), (3751, 5450)]