19910484

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{367}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 55456128

約数和(自身を除く): 35545644

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 137, 198, 274, 367, 396, 411, 548, 734, 822, 1101, 1233, 1468, 1507, 1644, 2202, 2466, 3014, 3303, 4037, 4404, 4521, 4932, 6028, 6606, 8074, 9042, 12111, 13212, 13563, 16148, 18084, 24222, 27126, 36333, 48444, 50279, 54252, 72666, 100558, 145332, 150837, 201116, 301674, 452511, 553069, 603348, 905022, 1106138, 1659207, 1810044, 2212276, 3318414, 4977621, 6636828, 9955242, 19910484]

約数ペア:

[(1, 19910484), (2, 9955242), (3, 6636828), (4, 4977621), (6, 3318414), (9, 2212276), (11, 1810044), (12, 1659207), (18, 1106138), (22, 905022), (33, 603348), (36, 553069), (44, 452511), (66, 301674), (99, 201116), (132, 150837), (137, 145332), (198, 100558), (274, 72666), (367, 54252), (396, 50279), (411, 48444), (548, 36333), (734, 27126), (822, 24222), (1101, 18084), (1233, 16148), (1468, 13563), (1507, 13212), (1644, 12111), (2202, 9042), (2466, 8074), (3014, 6606), (3303, 6028), (4037, 4932), (4404, 4521)]