21870140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{859}}^1$

素因数の和:954

約数の個数: 48

約数和(自身を含む): 49123200

約数和(自身を除く): 27253060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 67, 76, 95, 134, 190, 268, 335, 380, 670, 859, 1273, 1340, 1718, 2546, 3436, 4295, 5092, 6365, 8590, 12730, 16321, 17180, 25460, 32642, 57553, 65284, 81605, 115106, 163210, 230212, 287765, 326420, 575530, 1093507, 1151060, 2187014, 4374028, 5467535, 10935070, 21870140]

約数ペア:

[(1, 21870140), (2, 10935070), (4, 5467535), (5, 4374028), (10, 2187014), (19, 1151060), (20, 1093507), (38, 575530), (67, 326420), (76, 287765), (95, 230212), (134, 163210), (190, 115106), (268, 81605), (335, 65284), (380, 57553), (670, 32642), (859, 25460), (1273, 17180), (1340, 16321), (1718, 12730), (2546, 8590), (3436, 6365), (4295, 5092)]