20161308880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{358487}}^1$

素因数の和:358556

約数の個数: 80

約数和(自身を含む): 50675863680

約数和(自身を除く): 30514554800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 74, 76, 80, 95, 148, 152, 185, 190, 296, 304, 370, 380, 592, 703, 740, 760, 1406, 1480, 1520, 2812, 2960, 3515, 5624, 7030, 11248, 14060, 28120, 56240, 358487, 716974, 1433948, 1792435, 2867896, 3584870, 5735792, 6811253, 7169740, 13264019, 13622506, 14339480, 26528038, 27245012, 28678960, 34056265, 53056076, 54490024, 66320095, 68112530, 106112152, 108980048, 132640190, 136225060, 212224304, 252016361, 265280380, 272450120, 504032722, 530560760, 544900240, 1008065444, 1061121520, 1260081805, 2016130888, 2520163610, 4032261776, 5040327220, 10080654440, 20161308880]

約数ペア:

[(1, 20161308880), (2, 10080654440), (4, 5040327220), (5, 4032261776), (8, 2520163610), (10, 2016130888), (16, 1260081805), (19, 1061121520), (20, 1008065444), (37, 544900240), (38, 530560760), (40, 504032722), (74, 272450120), (76, 265280380), (80, 252016361), (95, 212224304), (148, 136225060), (152, 132640190), (185, 108980048), (190, 106112152), (296, 68112530), (304, 66320095), (370, 54490024), (380, 53056076), (592, 34056265), (703, 28678960), (740, 27245012), (760, 26528038), (1406, 14339480), (1480, 13622506), (1520, 13264019), (2812, 7169740), (2960, 6811253), (3515, 5735792), (5624, 3584870), (7030, 2867896), (11248, 1792435), (14060, 1433948), (28120, 716974), (56240, 358487)]