21718270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:497

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24246530

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 127, 245, 254, 349, 490, 635, 698, 889, 1270, 1745, 1778, 2443, 3490, 4445, 4886, 6223, 8890, 12215, 12446, 17101, 24430, 31115, 34202, 44323, 62230, 85505, 88646, 171010, 221615, 310261, 443230, 620522, 1551305, 2171827, 3102610, 4343654, 10859135, 21718270]

約数ペア:

[(1, 21718270), (2, 10859135), (5, 4343654), (7, 3102610), (10, 2171827), (14, 1551305), (35, 620522), (49, 443230), (70, 310261), (98, 221615), (127, 171010), (245, 88646), (254, 85505), (349, 62230), (490, 44323), (635, 34202), (698, 31115), (889, 24430), (1270, 17101), (1745, 12446), (1778, 12215), (2443, 8890), (3490, 6223), (4445, 4886)]