21781830

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{103723}}^1$

素因数の和:103740

約数の個数: 32

約数和(自身を含む): 59745024

約数和(自身を除く): 37963194

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 103723, 207446, 311169, 518615, 622338, 726061, 1037230, 1452122, 1555845, 2178183, 3111690, 3630305, 4356366, 7260610, 10890915, 21781830]

約数ペア:

[(1, 21781830), (2, 10890915), (3, 7260610), (5, 4356366), (6, 3630305), (7, 3111690), (10, 2178183), (14, 1555845), (15, 1452122), (21, 1037230), (30, 726061), (35, 622338), (42, 518615), (70, 311169), (105, 207446), (210, 103723)]