161639720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{3251}}^1$

素因数の和:3386

約数の個数: 64

約数和(自身を含む): 400386240

約数和(自身を除く): 238746520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 113, 220, 226, 440, 452, 565, 904, 1130, 1243, 2260, 2486, 3251, 4520, 4972, 6215, 6502, 9944, 12430, 13004, 16255, 24860, 26008, 32510, 35761, 49720, 65020, 71522, 130040, 143044, 178805, 286088, 357610, 367363, 715220, 734726, 1430440, 1469452, 1836815, 2938904, 3673630, 4040993, 7347260, 8081986, 14694520, 16163972, 20204965, 32327944, 40409930, 80819860, 161639720]

約数ペア:

[(1, 161639720), (2, 80819860), (4, 40409930), (5, 32327944), (8, 20204965), (10, 16163972), (11, 14694520), (20, 8081986), (22, 7347260), (40, 4040993), (44, 3673630), (55, 2938904), (88, 1836815), (110, 1469452), (113, 1430440), (220, 734726), (226, 715220), (440, 367363), (452, 357610), (565, 286088), (904, 178805), (1130, 143044), (1243, 130040), (2260, 71522), (2486, 65020), (3251, 49720), (4520, 35761), (4972, 32510), (6215, 26008), (6502, 24860), (9944, 16255), (12430, 13004)]