20541220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4733}}^1$

素因数の和:4780

約数の個数: 48

約数和(自身を含む): 50899968

約数和(自身を除く): 30358748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4733, 9466, 18932, 23665, 33131, 47330, 66262, 94660, 132524, 146723, 165655, 293446, 331310, 586892, 662620, 733615, 1027061, 1467230, 2054122, 2934460, 4108244, 5135305, 10270610, 20541220]

約数ペア:

[(1, 20541220), (2, 10270610), (4, 5135305), (5, 4108244), (7, 2934460), (10, 2054122), (14, 1467230), (20, 1027061), (28, 733615), (31, 662620), (35, 586892), (62, 331310), (70, 293446), (124, 165655), (140, 146723), (155, 132524), (217, 94660), (310, 66262), (434, 47330), (620, 33131), (868, 23665), (1085, 18932), (2170, 9466), (4340, 4733)]