20457996

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{659}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 51744000

約数和(自身を除く): 31286004

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 199, 398, 597, 659, 796, 1194, 1318, 1977, 2388, 2587, 2636, 3954, 5174, 7761, 7908, 8567, 10348, 15522, 17134, 25701, 31044, 34268, 51402, 102804, 131141, 262282, 393423, 524564, 786846, 1573692, 1704833, 3409666, 5114499, 6819332, 10228998, 20457996]

約数ペア:

[(1, 20457996), (2, 10228998), (3, 6819332), (4, 5114499), (6, 3409666), (12, 1704833), (13, 1573692), (26, 786846), (39, 524564), (52, 393423), (78, 262282), (156, 131141), (199, 102804), (398, 51402), (597, 34268), (659, 31044), (796, 25701), (1194, 17134), (1318, 15522), (1977, 10348), (2388, 8567), (2587, 7908), (2636, 7761), (3954, 5174)]