21319596

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:539

約数の個数: 72

約数和(自身を含む): 57657600

約数和(自身を除く): 36338004

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 71, 76, 114, 142, 171, 213, 228, 284, 342, 426, 439, 639, 684, 852, 878, 1278, 1317, 1349, 1756, 2556, 2634, 2698, 3951, 4047, 5268, 5396, 7902, 8094, 8341, 12141, 15804, 16188, 16682, 24282, 25023, 31169, 33364, 48564, 50046, 62338, 75069, 93507, 100092, 124676, 150138, 187014, 280521, 300276, 374028, 561042, 592211, 1122084, 1184422, 1776633, 2368844, 3553266, 5329899, 7106532, 10659798, 21319596]

約数ペア:

[(1, 21319596), (2, 10659798), (3, 7106532), (4, 5329899), (6, 3553266), (9, 2368844), (12, 1776633), (18, 1184422), (19, 1122084), (36, 592211), (38, 561042), (57, 374028), (71, 300276), (76, 280521), (114, 187014), (142, 150138), (171, 124676), (213, 100092), (228, 93507), (284, 75069), (342, 62338), (426, 50046), (439, 48564), (639, 33364), (684, 31169), (852, 25023), (878, 24282), (1278, 16682), (1317, 16188), (1349, 15804), (1756, 12141), (2556, 8341), (2634, 8094), (2698, 7902), (3951, 5396), (4047, 5268)]