20183605840

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{911}}^1\times {\mathrm{12041}}^1$

素因数の和:12988

約数の個数: 80

約数和(自身を含む): 49025005056

約数和(自身を除く): 28841399216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 911, 920, 1822, 1840, 3644, 4555, 7288, 9110, 12041, 14576, 18220, 20953, 24082, 36440, 41906, 48164, 60205, 72880, 83812, 96328, 104765, 120410, 167624, 192656, 209530, 240820, 276943, 335248, 419060, 481640, 553886, 838120, 963280, 1107772, 1384715, 1676240, 2215544, 2769430, 4431088, 5538860, 10969351, 11077720, 21938702, 22155440, 43877404, 54846755, 87754808, 109693510, 175509616, 219387020, 252295073, 438774040, 504590146, 877548080, 1009180292, 1261475365, 2018360584, 2522950730, 4036721168, 5045901460, 10091802920, 20183605840]

約数ペア:

[(1, 20183605840), (2, 10091802920), (4, 5045901460), (5, 4036721168), (8, 2522950730), (10, 2018360584), (16, 1261475365), (20, 1009180292), (23, 877548080), (40, 504590146), (46, 438774040), (80, 252295073), (92, 219387020), (115, 175509616), (184, 109693510), (230, 87754808), (368, 54846755), (460, 43877404), (911, 22155440), (920, 21938702), (1822, 11077720), (1840, 10969351), (3644, 5538860), (4555, 4431088), (7288, 2769430), (9110, 2215544), (12041, 1676240), (14576, 1384715), (18220, 1107772), (20953, 963280), (24082, 838120), (36440, 553886), (41906, 481640), (48164, 419060), (60205, 335248), (72880, 276943), (83812, 240820), (96328, 209530), (104765, 192656), (120410, 167624)]