21439652

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 22025308

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 79, 158, 221, 307, 316, 442, 614, 884, 1027, 1228, 1343, 2054, 2686, 3991, 4108, 5219, 5372, 7982, 10438, 15964, 17459, 20876, 24253, 34918, 48506, 67847, 69836, 97012, 135694, 271388, 315289, 412301, 630578, 824602, 1261156, 1649204, 5359913, 10719826, 21439652]

約数ペア:

[(1, 21439652), (2, 10719826), (4, 5359913), (13, 1649204), (17, 1261156), (26, 824602), (34, 630578), (52, 412301), (68, 315289), (79, 271388), (158, 135694), (221, 97012), (307, 69836), (316, 67847), (442, 48506), (614, 34918), (884, 24253), (1027, 20876), (1228, 17459), (1343, 15964), (2054, 10438), (2686, 7982), (3991, 5372), (4108, 5219)]