21210860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1439}}^1$

素因数の和:1526

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 28140820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1340, 1439, 1474, 2878, 2948, 3685, 5756, 7195, 7370, 14390, 14740, 15829, 28780, 31658, 63316, 79145, 96413, 158290, 192826, 316580, 385652, 482065, 964130, 1060543, 1928260, 2121086, 4242172, 5302715, 10605430, 21210860]

約数ペア:

[(1, 21210860), (2, 10605430), (4, 5302715), (5, 4242172), (10, 2121086), (11, 1928260), (20, 1060543), (22, 964130), (44, 482065), (55, 385652), (67, 316580), (110, 192826), (134, 158290), (220, 96413), (268, 79145), (335, 63316), (670, 31658), (737, 28780), (1340, 15829), (1439, 14740), (1474, 14390), (2878, 7370), (2948, 7195), (3685, 5756)]