20607520

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^2$

素因数の和:170

約数の個数: 72

約数和(自身を含む): 50862924

約数和(自身を除く): 30255404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 59, 74, 80, 118, 148, 160, 185, 236, 295, 296, 370, 472, 590, 592, 740, 944, 1180, 1184, 1480, 1888, 2183, 2360, 2960, 3481, 4366, 4720, 5920, 6962, 8732, 9440, 10915, 13924, 17405, 17464, 21830, 27848, 34810, 34928, 43660, 55696, 69620, 69856, 87320, 111392, 128797, 139240, 174640, 257594, 278480, 349280, 515188, 556960, 643985, 1030376, 1287970, 2060752, 2575940, 4121504, 5151880, 10303760, 20607520]

約数ペア:

[(1, 20607520), (2, 10303760), (4, 5151880), (5, 4121504), (8, 2575940), (10, 2060752), (16, 1287970), (20, 1030376), (32, 643985), (37, 556960), (40, 515188), (59, 349280), (74, 278480), (80, 257594), (118, 174640), (148, 139240), (160, 128797), (185, 111392), (236, 87320), (295, 69856), (296, 69620), (370, 55696), (472, 43660), (590, 34928), (592, 34810), (740, 27848), (944, 21830), (1180, 17464), (1184, 17405), (1480, 13924), (1888, 10915), (2183, 9440), (2360, 8732), (2960, 6962), (3481, 5920), (4366, 4720)]