21783047

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 5795833

約数列:

[1, 11, 13, 23, 37, 143, 179, 253, 299, 407, 481, 851, 1969, 2327, 3289, 4117, 5291, 6623, 9361, 11063, 25597, 45287, 53521, 72853, 86099, 121693, 152329, 588731, 947089, 1675619, 1980277, 21783047]

約数ペア:

[(1, 21783047), (11, 1980277), (13, 1675619), (23, 947089), (37, 588731), (143, 152329), (179, 121693), (253, 86099), (299, 72853), (407, 53521), (481, 45287), (851, 25597), (1969, 11063), (2327, 9361), (3289, 6623), (4117, 5291)]