81221490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{128923}}^1$

素因数の和:128943

約数の個数: 48

約数和(自身を含む): 241345728

約数和(自身を除く): 160124238

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 128923, 257846, 386769, 644615, 773538, 902461, 1160307, 1289230, 1804922, 1933845, 2320614, 2707383, 3867690, 4512305, 5414766, 5801535, 8122149, 9024610, 11603070, 13536915, 16244298, 27073830, 40610745, 81221490]

約数ペア:

[(1, 81221490), (2, 40610745), (3, 27073830), (5, 16244298), (6, 13536915), (7, 11603070), (9, 9024610), (10, 8122149), (14, 5801535), (15, 5414766), (18, 4512305), (21, 3867690), (30, 2707383), (35, 2320614), (42, 1933845), (45, 1804922), (63, 1289230), (70, 1160307), (90, 902461), (105, 773538), (126, 644615), (210, 386769), (315, 257846), (630, 128923)]