640692

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^2$

素因数の和:97

約数の個数: 54

約数和(自身を含む): 1792518

約数和(自身を除く): 1151826

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 37, 39, 52, 74, 78, 111, 117, 148, 156, 222, 234, 333, 444, 468, 481, 666, 962, 1332, 1369, 1443, 1924, 2738, 2886, 4107, 4329, 5476, 5772, 8214, 8658, 12321, 16428, 17316, 17797, 24642, 35594, 49284, 53391, 71188, 106782, 160173, 213564, 320346, 640692]

約数ペア:

[(1, 640692), (2, 320346), (3, 213564), (4, 160173), (6, 106782), (9, 71188), (12, 53391), (13, 49284), (18, 35594), (26, 24642), (36, 17797), (37, 17316), (39, 16428), (52, 12321), (74, 8658), (78, 8214), (111, 5772), (117, 5476), (148, 4329), (156, 4107), (222, 2886), (234, 2738), (333, 1924), (444, 1443), (468, 1369), (481, 1332), (666, 962)]