20581974

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{379}}^1\times {\mathrm{431}}^1$

素因数の和:825

約数の個数: 48

約数和(自身を含む): 51217920

約数和(自身を除く): 30635946

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 379, 431, 758, 862, 1137, 1293, 2274, 2586, 2653, 3017, 3411, 3879, 5306, 6034, 6822, 7758, 7959, 9051, 15918, 18102, 23877, 27153, 47754, 54306, 163349, 326698, 490047, 980094, 1143443, 1470141, 2286886, 2940282, 3430329, 6860658, 10290987, 20581974]

約数ペア:

[(1, 20581974), (2, 10290987), (3, 6860658), (6, 3430329), (7, 2940282), (9, 2286886), (14, 1470141), (18, 1143443), (21, 980094), (42, 490047), (63, 326698), (126, 163349), (379, 54306), (431, 47754), (758, 27153), (862, 23877), (1137, 18102), (1293, 15918), (2274, 9051), (2586, 7959), (2653, 7758), (3017, 6822), (3411, 6034), (3879, 5306)]