21015756

素因数分解:

$2^2\times 3^2\times {\mathrm{67}}^1\times {\mathrm{8713}}^1$

素因数の和:8790

約数の個数: 36

約数和(自身を含む): 53922232

約数和(自身を除く): 32906476

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 67, 134, 201, 268, 402, 603, 804, 1206, 2412, 8713, 17426, 26139, 34852, 52278, 78417, 104556, 156834, 313668, 583771, 1167542, 1751313, 2335084, 3502626, 5253939, 7005252, 10507878, 21015756]

約数ペア:

[(1, 21015756), (2, 10507878), (3, 7005252), (4, 5253939), (6, 3502626), (9, 2335084), (12, 1751313), (18, 1167542), (36, 583771), (67, 313668), (134, 156834), (201, 104556), (268, 78417), (402, 52278), (603, 34852), (804, 26139), (1206, 17426), (2412, 8713)]