20727388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 20399012

約数列:

[1, 2, 4, 11, 22, 44, 67, 79, 89, 134, 158, 178, 268, 316, 356, 737, 869, 979, 1474, 1738, 1958, 2948, 3476, 3916, 5293, 5963, 7031, 10586, 11926, 14062, 21172, 23852, 28124, 58223, 65593, 77341, 116446, 131186, 154682, 232892, 262372, 309364, 471077, 942154, 1884308, 5181847, 10363694, 20727388]

約数ペア:

[(1, 20727388), (2, 10363694), (4, 5181847), (11, 1884308), (22, 942154), (44, 471077), (67, 309364), (79, 262372), (89, 232892), (134, 154682), (158, 131186), (178, 116446), (268, 77341), (316, 65593), (356, 58223), (737, 28124), (869, 23852), (979, 21172), (1474, 14062), (1738, 11926), (1958, 10586), (2948, 7031), (3476, 5963), (3916, 5293)]