20753200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^2\times {\mathrm{307}}^1$

素因数の和:351

約数の個数: 90

約数和(自身を含む): 54165804

約数和(自身を除く): 33412604

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 169, 200, 208, 260, 307, 325, 338, 400, 520, 614, 650, 676, 845, 1040, 1228, 1300, 1352, 1535, 1690, 2456, 2600, 2704, 3070, 3380, 3991, 4225, 4912, 5200, 6140, 6760, 7675, 7982, 8450, 12280, 13520, 15350, 15964, 16900, 19955, 24560, 30700, 31928, 33800, 39910, 51883, 61400, 63856, 67600, 79820, 99775, 103766, 122800, 159640, 199550, 207532, 259415, 319280, 399100, 415064, 518830, 798200, 830128, 1037660, 1297075, 1596400, 2075320, 2594150, 4150640, 5188300, 10376600, 20753200]

約数ペア:

[(1, 20753200), (2, 10376600), (4, 5188300), (5, 4150640), (8, 2594150), (10, 2075320), (13, 1596400), (16, 1297075), (20, 1037660), (25, 830128), (26, 798200), (40, 518830), (50, 415064), (52, 399100), (65, 319280), (80, 259415), (100, 207532), (104, 199550), (130, 159640), (169, 122800), (200, 103766), (208, 99775), (260, 79820), (307, 67600), (325, 63856), (338, 61400), (400, 51883), (520, 39910), (614, 33800), (650, 31928), (676, 30700), (845, 24560), (1040, 19955), (1228, 16900), (1300, 15964), (1352, 15350), (1535, 13520), (1690, 12280), (2456, 8450), (2600, 7982), (2704, 7675), (3070, 6760), (3380, 6140), (3991, 5200), (4225, 4912)]