21338595

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 39424320

約数和(自身を除く): 18085725

約数列:

[1, 3, 5, 9, 15, 23, 45, 53, 69, 115, 159, 207, 265, 345, 389, 477, 795, 1035, 1167, 1219, 1945, 2385, 3501, 3657, 5835, 6095, 8947, 10971, 17505, 18285, 20617, 26841, 44735, 54855, 61851, 80523, 103085, 134205, 185553, 309255, 402615, 474191, 927765, 1422573, 2370955, 4267719, 7112865, 21338595]

約数ペア:

[(1, 21338595), (3, 7112865), (5, 4267719), (9, 2370955), (15, 1422573), (23, 927765), (45, 474191), (53, 402615), (69, 309255), (115, 185553), (159, 134205), (207, 103085), (265, 80523), (345, 61851), (389, 54855), (477, 44735), (795, 26841), (1035, 20617), (1167, 18285), (1219, 17505), (1945, 10971), (2385, 8947), (3501, 6095), (3657, 5835)]