20851920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28961}}^1$

素因数の和:28980

約数の個数: 60

約数和(自身を含む): 70030116

約数和(自身を除く): 49178196

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28961, 57922, 86883, 115844, 144805, 173766, 231688, 260649, 289610, 347532, 434415, 463376, 521298, 579220, 695064, 868830, 1042596, 1158440, 1303245, 1390128, 1737660, 2085192, 2316880, 2606490, 3475320, 4170384, 5212980, 6950640, 10425960, 20851920]

約数ペア:

[(1, 20851920), (2, 10425960), (3, 6950640), (4, 5212980), (5, 4170384), (6, 3475320), (8, 2606490), (9, 2316880), (10, 2085192), (12, 1737660), (15, 1390128), (16, 1303245), (18, 1158440), (20, 1042596), (24, 868830), (30, 695064), (36, 579220), (40, 521298), (45, 463376), (48, 434415), (60, 347532), (72, 289610), (80, 260649), (90, 231688), (120, 173766), (144, 144805), (180, 115844), (240, 86883), (360, 57922), (720, 28961)]