20739536

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{661}}^1$

素因数の和:759

約数の個数: 40

約数和(自身を含む): 42111144

約数和(自身を除く): 21371608

約数列:

[1, 2, 4, 8, 16, 37, 53, 74, 106, 148, 212, 296, 424, 592, 661, 848, 1322, 1961, 2644, 3922, 5288, 7844, 10576, 15688, 24457, 31376, 35033, 48914, 70066, 97828, 140132, 195656, 280264, 391312, 560528, 1296221, 2592442, 5184884, 10369768, 20739536]

約数ペア:

[(1, 20739536), (2, 10369768), (4, 5184884), (8, 2592442), (16, 1296221), (37, 560528), (53, 391312), (74, 280264), (106, 195656), (148, 140132), (212, 97828), (296, 70066), (424, 48914), (592, 35033), (661, 31376), (848, 24457), (1322, 15688), (1961, 10576), (2644, 7844), (3922, 5288)]