21928220

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 25645348

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 137, 151, 212, 265, 274, 302, 530, 548, 604, 685, 755, 1060, 1370, 1510, 2740, 3020, 7261, 8003, 14522, 16006, 20687, 29044, 32012, 36305, 40015, 41374, 72610, 80030, 82748, 103435, 145220, 160060, 206870, 413740, 1096411, 2192822, 4385644, 5482055, 10964110, 21928220]

約数ペア:

[(1, 21928220), (2, 10964110), (4, 5482055), (5, 4385644), (10, 2192822), (20, 1096411), (53, 413740), (106, 206870), (137, 160060), (151, 145220), (212, 103435), (265, 82748), (274, 80030), (302, 72610), (530, 41374), (548, 40015), (604, 36305), (685, 32012), (755, 29044), (1060, 20687), (1370, 16006), (1510, 14522), (2740, 8003), (3020, 7261)]