21855186

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{739}}^1$

素因数の和:831

約数の個数: 48

約数和(自身を含む): 49870080

約数和(自身を除く): 28014894

約数列:

[1, 2, 3, 6, 9, 18, 31, 53, 62, 93, 106, 159, 186, 279, 318, 477, 558, 739, 954, 1478, 1643, 2217, 3286, 4434, 4929, 6651, 9858, 13302, 14787, 22909, 29574, 39167, 45818, 68727, 78334, 117501, 137454, 206181, 235002, 352503, 412362, 705006, 1214177, 2428354, 3642531, 7285062, 10927593, 21855186]

約数ペア:

[(1, 21855186), (2, 10927593), (3, 7285062), (6, 3642531), (9, 2428354), (18, 1214177), (31, 705006), (53, 412362), (62, 352503), (93, 235002), (106, 206181), (159, 137454), (186, 117501), (279, 78334), (318, 68727), (477, 45818), (558, 39167), (739, 29574), (954, 22909), (1478, 14787), (1643, 13302), (2217, 9858), (3286, 6651), (4434, 4929)]