79939980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4001}}^1$

素因数の和:4056

約数の個数: 96

約数和(自身を含む): 255487680

約数和(自身を除く): 175547700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 90, 108, 111, 135, 148, 180, 185, 222, 270, 333, 370, 444, 540, 555, 666, 740, 999, 1110, 1332, 1665, 1998, 2220, 3330, 3996, 4001, 4995, 6660, 8002, 9990, 12003, 16004, 19980, 20005, 24006, 36009, 40010, 48012, 60015, 72018, 80020, 108027, 120030, 144036, 148037, 180045, 216054, 240060, 296074, 360090, 432108, 444111, 540135, 592148, 720180, 740185, 888222, 1080270, 1332333, 1480370, 1776444, 2160540, 2220555, 2664666, 2960740, 3996999, 4441110, 5329332, 6661665, 7993998, 8882220, 13323330, 15987996, 19984995, 26646660, 39969990, 79939980]

約数ペア:

[(1, 79939980), (2, 39969990), (3, 26646660), (4, 19984995), (5, 15987996), (6, 13323330), (9, 8882220), (10, 7993998), (12, 6661665), (15, 5329332), (18, 4441110), (20, 3996999), (27, 2960740), (30, 2664666), (36, 2220555), (37, 2160540), (45, 1776444), (54, 1480370), (60, 1332333), (74, 1080270), (90, 888222), (108, 740185), (111, 720180), (135, 592148), (148, 540135), (180, 444111), (185, 432108), (222, 360090), (270, 296074), (333, 240060), (370, 216054), (444, 180045), (540, 148037), (555, 144036), (666, 120030), (740, 108027), (999, 80020), (1110, 72018), (1332, 60015), (1665, 48012), (1998, 40010), (2220, 36009), (3330, 24006), (3996, 20005), (4001, 19980), (4995, 16004), (6660, 12003), (8002, 9990)]