17987920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 44104320

約数和(自身を除く): 26116400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 59, 74, 80, 103, 118, 148, 185, 206, 236, 295, 296, 370, 412, 472, 515, 590, 592, 740, 824, 944, 1030, 1180, 1480, 1648, 2060, 2183, 2360, 2960, 3811, 4120, 4366, 4720, 6077, 7622, 8240, 8732, 10915, 12154, 15244, 17464, 19055, 21830, 24308, 30385, 30488, 34928, 38110, 43660, 48616, 60770, 60976, 76220, 87320, 97232, 121540, 152440, 174640, 224849, 243080, 304880, 449698, 486160, 899396, 1124245, 1798792, 2248490, 3597584, 4496980, 8993960, 17987920]

約数ペア:

[(1, 17987920), (2, 8993960), (4, 4496980), (5, 3597584), (8, 2248490), (10, 1798792), (16, 1124245), (20, 899396), (37, 486160), (40, 449698), (59, 304880), (74, 243080), (80, 224849), (103, 174640), (118, 152440), (148, 121540), (185, 97232), (206, 87320), (236, 76220), (295, 60976), (296, 60770), (370, 48616), (412, 43660), (472, 38110), (515, 34928), (590, 30488), (592, 30385), (740, 24308), (824, 21830), (944, 19055), (1030, 17464), (1180, 15244), (1480, 12154), (1648, 10915), (2060, 8732), (2183, 8240), (2360, 7622), (2960, 6077), (3811, 4720), (4120, 4366)]