21001533

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{179}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 12268227

約数列:

[1, 3, 7, 21, 37, 111, 151, 179, 259, 453, 537, 777, 1057, 1253, 3171, 3759, 5587, 6623, 16761, 19869, 27029, 39109, 46361, 81087, 117327, 139083, 189203, 567609, 1000073, 3000219, 7000511, 21001533]

約数ペア:

[(1, 21001533), (3, 7000511), (7, 3000219), (21, 1000073), (37, 567609), (111, 189203), (151, 139083), (179, 117327), (259, 81087), (453, 46361), (537, 39109), (777, 27029), (1057, 19869), (1253, 16761), (3171, 6623), (3759, 5587)]