21262580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2719}}^1$

素因数の和:2768

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 28089100

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2719, 3910, 5438, 7820, 10876, 13595, 27190, 46223, 54380, 62537, 92446, 125074, 184892, 231115, 250148, 312685, 462230, 625370, 924460, 1063129, 1250740, 2126258, 4252516, 5315645, 10631290, 21262580]

約数ペア:

[(1, 21262580), (2, 10631290), (4, 5315645), (5, 4252516), (10, 2126258), (17, 1250740), (20, 1063129), (23, 924460), (34, 625370), (46, 462230), (68, 312685), (85, 250148), (92, 231115), (115, 184892), (170, 125074), (230, 92446), (340, 62537), (391, 54380), (460, 46223), (782, 27190), (1564, 13595), (1955, 10876), (2719, 7820), (3910, 5438)]