18989010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2089}}^1$

素因数の和:2203

約数の個数: 48

約数和(自身を含む): 49884120

約数和(自身を除く): 30895110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 101, 202, 303, 505, 606, 909, 1010, 1515, 1818, 2089, 3030, 4178, 4545, 6267, 9090, 10445, 12534, 18801, 20890, 31335, 37602, 62670, 94005, 188010, 210989, 421978, 632967, 1054945, 1265934, 1898901, 2109890, 3164835, 3797802, 6329670, 9494505, 18989010]

約数ペア:

[(1, 18989010), (2, 9494505), (3, 6329670), (5, 3797802), (6, 3164835), (9, 2109890), (10, 1898901), (15, 1265934), (18, 1054945), (30, 632967), (45, 421978), (90, 210989), (101, 188010), (202, 94005), (303, 62670), (505, 37602), (606, 31335), (909, 20890), (1010, 18801), (1515, 12534), (1818, 10445), (2089, 9090), (3030, 6267), (4178, 4545)]