20398404

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{571}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 51571520

約数和(自身を除く): 31173116

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 229, 458, 571, 687, 916, 1142, 1374, 1713, 2284, 2748, 2977, 3426, 5954, 6852, 7423, 8931, 11908, 14846, 17862, 22269, 29692, 35724, 44538, 89076, 130759, 261518, 392277, 523036, 784554, 1569108, 1699867, 3399734, 5099601, 6799468, 10199202, 20398404]

約数ペア:

[(1, 20398404), (2, 10199202), (3, 6799468), (4, 5099601), (6, 3399734), (12, 1699867), (13, 1569108), (26, 784554), (39, 523036), (52, 392277), (78, 261518), (156, 130759), (229, 89076), (458, 44538), (571, 35724), (687, 29692), (916, 22269), (1142, 17862), (1374, 14846), (1713, 11908), (2284, 8931), (2748, 7423), (2977, 6852), (3426, 5954)]