20553650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:435

約数の個数: 48

約数和(自身を含む): 41705664

約数和(自身を除く): 21152014

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 103, 130, 206, 307, 325, 515, 614, 650, 1030, 1339, 1535, 2575, 2678, 3070, 3991, 5150, 6695, 7675, 7982, 13390, 15350, 19955, 31621, 33475, 39910, 63242, 66950, 99775, 158105, 199550, 316210, 411073, 790525, 822146, 1581050, 2055365, 4110730, 10276825, 20553650]

約数ペア:

[(1, 20553650), (2, 10276825), (5, 4110730), (10, 2055365), (13, 1581050), (25, 822146), (26, 790525), (50, 411073), (65, 316210), (103, 199550), (130, 158105), (206, 99775), (307, 66950), (325, 63242), (515, 39910), (614, 33475), (650, 31621), (1030, 19955), (1339, 15350), (1535, 13390), (2575, 7982), (2678, 7675), (3070, 6695), (3991, 5150)]