20721050

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{811}}^1$

素因数の和:903

約数の個数: 48

約数和(自身を含む): 44705472

約数和(自身を除く): 23984422

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 73, 146, 175, 350, 365, 511, 730, 811, 1022, 1622, 1825, 2555, 3650, 4055, 5110, 5677, 8110, 11354, 12775, 20275, 25550, 28385, 40550, 56770, 59203, 118406, 141925, 283850, 296015, 414421, 592030, 828842, 1480075, 2072105, 2960150, 4144210, 10360525, 20721050]

約数ペア:

[(1, 20721050), (2, 10360525), (5, 4144210), (7, 2960150), (10, 2072105), (14, 1480075), (25, 828842), (35, 592030), (50, 414421), (70, 296015), (73, 283850), (146, 141925), (175, 118406), (350, 59203), (365, 56770), (511, 40550), (730, 28385), (811, 25550), (1022, 20275), (1622, 12775), (1825, 11354), (2555, 8110), (3650, 5677), (4055, 5110)]