21081410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{659}}^1$

素因数の和:1130

約数の個数: 32

約数和(自身を含む): 43528320

約数和(自身を除く): 22446910

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 457, 659, 914, 1318, 2285, 3199, 3295, 4570, 4613, 6398, 6590, 9226, 15995, 23065, 31990, 46130, 301163, 602326, 1505815, 2108141, 3011630, 4216282, 10540705, 21081410]

約数ペア:

[(1, 21081410), (2, 10540705), (5, 4216282), (7, 3011630), (10, 2108141), (14, 1505815), (35, 602326), (70, 301163), (457, 46130), (659, 31990), (914, 23065), (1318, 15995), (2285, 9226), (3199, 6590), (3295, 6398), (4570, 4613)]