20594540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{563}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 45480960

約数和(自身を除く): 24886420

約数列:

[1, 2, 4, 5, 10, 20, 31, 59, 62, 118, 124, 155, 236, 295, 310, 563, 590, 620, 1126, 1180, 1829, 2252, 2815, 3658, 5630, 7316, 9145, 11260, 17453, 18290, 33217, 34906, 36580, 66434, 69812, 87265, 132868, 166085, 174530, 332170, 349060, 664340, 1029727, 2059454, 4118908, 5148635, 10297270, 20594540]

約数ペア:

[(1, 20594540), (2, 10297270), (4, 5148635), (5, 4118908), (10, 2059454), (20, 1029727), (31, 664340), (59, 349060), (62, 332170), (118, 174530), (124, 166085), (155, 132868), (236, 87265), (295, 69812), (310, 66434), (563, 36580), (590, 34906), (620, 33217), (1126, 18290), (1180, 17453), (1829, 11260), (2252, 9145), (2815, 7316), (3658, 5630)]