18654020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12113}}^1$

素因数の和:12140

約数の個数: 48

約数和(自身を含む): 48843648

約数和(自身を除く): 30189628

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12113, 24226, 48452, 60565, 84791, 121130, 133243, 169582, 242260, 266486, 339164, 423955, 532972, 666215, 847910, 932701, 1332430, 1695820, 1865402, 2664860, 3730804, 4663505, 9327010, 18654020]

約数ペア:

[(1, 18654020), (2, 9327010), (4, 4663505), (5, 3730804), (7, 2664860), (10, 1865402), (11, 1695820), (14, 1332430), (20, 932701), (22, 847910), (28, 666215), (35, 532972), (44, 423955), (55, 339164), (70, 266486), (77, 242260), (110, 169582), (140, 133243), (154, 121130), (220, 84791), (308, 60565), (385, 48452), (770, 24226), (1540, 12113)]