20957488

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1$

素因数の和:146

約数の個数: 60

約数和(自身を含む): 44327520

約数和(自身を除く): 23370032

約数列:

[1, 2, 4, 8, 16, 29, 31, 47, 58, 62, 94, 116, 124, 188, 232, 248, 376, 464, 496, 752, 899, 961, 1363, 1457, 1798, 1922, 2726, 2914, 3596, 3844, 5452, 5828, 7192, 7688, 10904, 11656, 14384, 15376, 21808, 23312, 27869, 42253, 45167, 55738, 84506, 90334, 111476, 169012, 180668, 222952, 338024, 361336, 445904, 676048, 722672, 1309843, 2619686, 5239372, 10478744, 20957488]

約数ペア:

[(1, 20957488), (2, 10478744), (4, 5239372), (8, 2619686), (16, 1309843), (29, 722672), (31, 676048), (47, 445904), (58, 361336), (62, 338024), (94, 222952), (116, 180668), (124, 169012), (188, 111476), (232, 90334), (248, 84506), (376, 55738), (464, 45167), (496, 42253), (752, 27869), (899, 23312), (961, 21808), (1363, 15376), (1457, 14384), (1798, 11656), (1922, 10904), (2726, 7688), (2914, 7192), (3596, 5828), (3844, 5452)]