20998240

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3547}}^1$

素因数の和:3599

約数の個数: 48

約数和(自身を含む): 50963472

約数和(自身を除く): 29965232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3547, 5920, 7094, 14188, 17735, 28376, 35470, 56752, 70940, 113504, 131239, 141880, 262478, 283760, 524956, 567520, 656195, 1049912, 1312390, 2099824, 2624780, 4199648, 5249560, 10499120, 20998240]

約数ペア:

[(1, 20998240), (2, 10499120), (4, 5249560), (5, 4199648), (8, 2624780), (10, 2099824), (16, 1312390), (20, 1049912), (32, 656195), (37, 567520), (40, 524956), (74, 283760), (80, 262478), (148, 141880), (160, 131239), (185, 113504), (296, 70940), (370, 56752), (592, 35470), (740, 28376), (1184, 17735), (1480, 14188), (2960, 7094), (3547, 5920)]