21089690

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{947}}^1$

素因数の和:1102

約数の個数: 32

約数和(自身を含む): 40544064

約数和(自身を除く): 19454374

約数列:

[1, 2, 5, 10, 17, 34, 85, 131, 170, 262, 655, 947, 1310, 1894, 2227, 4454, 4735, 9470, 11135, 16099, 22270, 32198, 80495, 124057, 160990, 248114, 620285, 1240570, 2108969, 4217938, 10544845, 21089690]

約数ペア:

[(1, 21089690), (2, 10544845), (5, 4217938), (10, 2108969), (17, 1240570), (34, 620285), (85, 248114), (131, 160990), (170, 124057), (262, 80495), (655, 32198), (947, 22270), (1310, 16099), (1894, 11135), (2227, 9470), (4454, 4735)]