21913060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{311}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 49900032

約数和(自身を除く): 27986972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 271, 311, 542, 622, 1084, 1244, 1355, 1555, 2710, 3110, 3523, 4043, 5420, 6220, 7046, 8086, 14092, 16172, 17615, 20215, 35230, 40430, 70460, 80860, 84281, 168562, 337124, 421405, 842810, 1095653, 1685620, 2191306, 4382612, 5478265, 10956530, 21913060]

約数ペア:

[(1, 21913060), (2, 10956530), (4, 5478265), (5, 4382612), (10, 2191306), (13, 1685620), (20, 1095653), (26, 842810), (52, 421405), (65, 337124), (130, 168562), (260, 84281), (271, 80860), (311, 70460), (542, 40430), (622, 35230), (1084, 20215), (1244, 17615), (1355, 16172), (1555, 14092), (2710, 8086), (3110, 7046), (3523, 6220), (4043, 5420)]