19544720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18793}}^1$

素因数の和:18819

約数の個数: 40

約数和(自身を含む): 48939576

約数和(自身を除く): 29394856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18793, 37586, 75172, 93965, 150344, 187930, 244309, 300688, 375860, 488618, 751720, 977236, 1221545, 1503440, 1954472, 2443090, 3908944, 4886180, 9772360, 19544720]

約数ペア:

[(1, 19544720), (2, 9772360), (4, 4886180), (5, 3908944), (8, 2443090), (10, 1954472), (13, 1503440), (16, 1221545), (20, 977236), (26, 751720), (40, 488618), (52, 375860), (65, 300688), (80, 244309), (104, 187930), (130, 150344), (208, 93965), (260, 75172), (520, 37586), (1040, 18793)]