20890016

素因数分解:

$2^5\times 7^1\times {\mathrm{179}}^1\times {\mathrm{521}}^1$

素因数の和:717

約数の個数: 48

約数和(自身を含む): 47355840

約数和(自身を除く): 26465824

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 179, 224, 358, 521, 716, 1042, 1253, 1432, 2084, 2506, 2864, 3647, 4168, 5012, 5728, 7294, 8336, 10024, 14588, 16672, 20048, 29176, 40096, 58352, 93259, 116704, 186518, 373036, 652813, 746072, 1305626, 1492144, 2611252, 2984288, 5222504, 10445008, 20890016]

約数ペア:

[(1, 20890016), (2, 10445008), (4, 5222504), (7, 2984288), (8, 2611252), (14, 1492144), (16, 1305626), (28, 746072), (32, 652813), (56, 373036), (112, 186518), (179, 116704), (224, 93259), (358, 58352), (521, 40096), (716, 29176), (1042, 20048), (1253, 16672), (1432, 14588), (2084, 10024), (2506, 8336), (2864, 7294), (3647, 5728), (4168, 5012)]