1311860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 3084480

約数和(自身を除く): 1772620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 89, 110, 134, 178, 220, 268, 335, 356, 445, 670, 737, 890, 979, 1340, 1474, 1780, 1958, 2948, 3685, 3916, 4895, 5963, 7370, 9790, 11926, 14740, 19580, 23852, 29815, 59630, 65593, 119260, 131186, 262372, 327965, 655930, 1311860]

約数ペア:

[(1, 1311860), (2, 655930), (4, 327965), (5, 262372), (10, 131186), (11, 119260), (20, 65593), (22, 59630), (44, 29815), (55, 23852), (67, 19580), (89, 14740), (110, 11926), (134, 9790), (178, 7370), (220, 5963), (268, 4895), (335, 3916), (356, 3685), (445, 2948), (670, 1958), (737, 1780), (890, 1474), (979, 1340)]