21473380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{461}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 48199536

約数和(自身を除く): 26726156

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 274, 340, 461, 548, 685, 922, 1370, 1844, 2305, 2329, 2740, 4610, 4658, 7837, 9220, 9316, 11645, 15674, 23290, 31348, 39185, 46580, 63157, 78370, 126314, 156740, 252628, 315785, 631570, 1073669, 1263140, 2147338, 4294676, 5368345, 10736690, 21473380]

約数ペア:

[(1, 21473380), (2, 10736690), (4, 5368345), (5, 4294676), (10, 2147338), (17, 1263140), (20, 1073669), (34, 631570), (68, 315785), (85, 252628), (137, 156740), (170, 126314), (274, 78370), (340, 63157), (461, 46580), (548, 39185), (685, 31348), (922, 23290), (1370, 15674), (1844, 11645), (2305, 9316), (2329, 9220), (2740, 7837), (4610, 4658)]