420935840

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1289}}^1$

素因数の和:1474

約数の個数: 96

約数和(自身を含む): 1078615440

約数和(自身を除く): 657679600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 157, 160, 208, 260, 314, 416, 520, 628, 785, 1040, 1256, 1289, 1570, 2041, 2080, 2512, 2578, 3140, 4082, 5024, 5156, 6280, 6445, 8164, 10205, 10312, 12560, 12890, 16328, 16757, 20410, 20624, 25120, 25780, 32656, 33514, 40820, 41248, 51560, 65312, 67028, 81640, 83785, 103120, 134056, 163280, 167570, 202373, 206240, 268112, 326560, 335140, 404746, 536224, 670280, 809492, 1011865, 1340560, 1618984, 2023730, 2630849, 2681120, 3237968, 4047460, 5261698, 6475936, 8094920, 10523396, 13154245, 16189840, 21046792, 26308490, 32379680, 42093584, 52616980, 84187168, 105233960, 210467920, 420935840]

約数ペア:

[(1, 420935840), (2, 210467920), (4, 105233960), (5, 84187168), (8, 52616980), (10, 42093584), (13, 32379680), (16, 26308490), (20, 21046792), (26, 16189840), (32, 13154245), (40, 10523396), (52, 8094920), (65, 6475936), (80, 5261698), (104, 4047460), (130, 3237968), (157, 2681120), (160, 2630849), (208, 2023730), (260, 1618984), (314, 1340560), (416, 1011865), (520, 809492), (628, 670280), (785, 536224), (1040, 404746), (1256, 335140), (1289, 326560), (1570, 268112), (2041, 206240), (2080, 202373), (2512, 167570), (2578, 163280), (3140, 134056), (4082, 103120), (5024, 83785), (5156, 81640), (6280, 67028), (6445, 65312), (8164, 51560), (10205, 41248), (10312, 40820), (12560, 33514), (12890, 32656), (16328, 25780), (16757, 25120), (20410, 20624)]