20280156

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1831}}^1$

素因数の和:1922

約数の個数: 48

約数和(自身を含む): 51706368

約数和(自身を除く): 31426212

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 71, 78, 142, 156, 213, 284, 426, 852, 923, 1831, 1846, 2769, 3662, 3692, 5493, 5538, 7324, 10986, 11076, 21972, 23803, 47606, 71409, 95212, 130001, 142818, 260002, 285636, 390003, 520004, 780006, 1560012, 1690013, 3380026, 5070039, 6760052, 10140078, 20280156]

約数ペア:

[(1, 20280156), (2, 10140078), (3, 6760052), (4, 5070039), (6, 3380026), (12, 1690013), (13, 1560012), (26, 780006), (39, 520004), (52, 390003), (71, 285636), (78, 260002), (142, 142818), (156, 130001), (213, 95212), (284, 71409), (426, 47606), (852, 23803), (923, 21972), (1831, 11076), (1846, 10986), (2769, 7324), (3662, 5538), (3692, 5493)]