20781408

素因数分解:

$2^5\times 3^1\times {\mathrm{31}}^1\times {\mathrm{6983}}^1$

素因数の和:7027

約数の個数: 48

約数和(自身を含む): 56318976

約数和(自身を除く): 35537568

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 32, 48, 62, 93, 96, 124, 186, 248, 372, 496, 744, 992, 1488, 2976, 6983, 13966, 20949, 27932, 41898, 55864, 83796, 111728, 167592, 216473, 223456, 335184, 432946, 649419, 670368, 865892, 1298838, 1731784, 2597676, 3463568, 5195352, 6927136, 10390704, 20781408]

約数ペア:

[(1, 20781408), (2, 10390704), (3, 6927136), (4, 5195352), (6, 3463568), (8, 2597676), (12, 1731784), (16, 1298838), (24, 865892), (31, 670368), (32, 649419), (48, 432946), (62, 335184), (93, 223456), (96, 216473), (124, 167592), (186, 111728), (248, 83796), (372, 55864), (496, 41898), (744, 27932), (992, 20949), (1488, 13966), (2976, 6983)]