28439720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{24517}}^1$

素因数の和:24557

約数の個数: 32

約数和(自身を含む): 66198600

約数和(自身を除く): 37758880

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 24517, 49034, 98068, 122585, 196136, 245170, 490340, 710993, 980680, 1421986, 2843972, 3554965, 5687944, 7109930, 14219860, 28439720]

約数ペア:

[(1, 28439720), (2, 14219860), (4, 7109930), (5, 5687944), (8, 3554965), (10, 2843972), (20, 1421986), (29, 980680), (40, 710993), (58, 490340), (116, 245170), (145, 196136), (232, 122585), (290, 98068), (580, 49034), (1160, 24517)]