21716140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2777}}^1$

素因数の和:2826

約数の個数: 48

約数和(自身を含む): 50404032

約数和(自身を除く): 28687892

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, 2777, 3910, 5554, 7820, 11108, 13885, 27770, 47209, 55540, 63871, 94418, 127742, 188836, 236045, 255484, 319355, 472090, 638710, 944180, 1085807, 1277420, 2171614, 4343228, 5429035, 10858070, 21716140]

約数ペア:

[(1, 21716140), (2, 10858070), (4, 5429035), (5, 4343228), (10, 2171614), (17, 1277420), (20, 1085807), (23, 944180), (34, 638710), (46, 472090), (68, 319355), (85, 255484), (92, 236045), (115, 188836), (170, 127742), (230, 94418), (340, 63871), (391, 55540), (460, 47209), (782, 27770), (1564, 13885), (1955, 11108), (2777, 7820), (3910, 5554)]