21283340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{751}}^1$

素因数の和:882

約数の個数: 48

約数和(自身を含む): 48639360

約数和(自身を除く): 27356020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 751, 1090, 1417, 1502, 2180, 2834, 3004, 3755, 5668, 7085, 7510, 9763, 14170, 15020, 19526, 28340, 39052, 48815, 81859, 97630, 163718, 195260, 327436, 409295, 818590, 1064167, 1637180, 2128334, 4256668, 5320835, 10641670, 21283340]

約数ペア:

[(1, 21283340), (2, 10641670), (4, 5320835), (5, 4256668), (10, 2128334), (13, 1637180), (20, 1064167), (26, 818590), (52, 409295), (65, 327436), (109, 195260), (130, 163718), (218, 97630), (260, 81859), (436, 48815), (545, 39052), (751, 28340), (1090, 19526), (1417, 15020), (1502, 14170), (2180, 9763), (2834, 7510), (3004, 7085), (3755, 5668)]