31873580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 69914880

約数和(自身を除く): 38041300

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 101, 124, 155, 202, 310, 404, 505, 509, 620, 1010, 1018, 2020, 2036, 2545, 3131, 5090, 6262, 10180, 12524, 15655, 15779, 31310, 31558, 51409, 62620, 63116, 78895, 102818, 157790, 205636, 257045, 315580, 514090, 1028180, 1593679, 3187358, 6374716, 7968395, 15936790, 31873580]

約数ペア:

[(1, 31873580), (2, 15936790), (4, 7968395), (5, 6374716), (10, 3187358), (20, 1593679), (31, 1028180), (62, 514090), (101, 315580), (124, 257045), (155, 205636), (202, 157790), (310, 102818), (404, 78895), (505, 63116), (509, 62620), (620, 51409), (1010, 31558), (1018, 31310), (2020, 15779), (2036, 15655), (2545, 12524), (3131, 10180), (5090, 6262)]