20999667

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{571}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 11288589

約数列:

[1, 3, 13, 23, 39, 41, 69, 123, 299, 533, 571, 897, 943, 1599, 1713, 2829, 7423, 12259, 13133, 22269, 23411, 36777, 39399, 70233, 170729, 304343, 512187, 538453, 913029, 1615359, 6999889, 20999667]

約数ペア:

[(1, 20999667), (3, 6999889), (13, 1615359), (23, 913029), (39, 538453), (41, 512187), (69, 304343), (123, 170729), (299, 70233), (533, 39399), (571, 36777), (897, 23411), (943, 22269), (1599, 13133), (1713, 12259), (2829, 7423)]