21539350

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:158

約数の個数: 96

約数和(自身を含む): 49996800

約数和(自身を除く): 28457450

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 35, 38, 41, 50, 70, 79, 82, 95, 133, 158, 175, 190, 205, 266, 287, 350, 395, 410, 475, 553, 574, 665, 779, 790, 950, 1025, 1106, 1330, 1435, 1501, 1558, 1975, 2050, 2765, 2870, 3002, 3239, 3325, 3895, 3950, 5453, 5530, 6478, 6650, 7175, 7505, 7790, 10507, 10906, 13825, 14350, 15010, 16195, 19475, 21014, 22673, 27265, 27650, 32390, 37525, 38950, 45346, 52535, 54530, 61541, 75050, 80975, 105070, 113365, 123082, 136325, 161950, 226730, 262675, 272650, 307705, 430787, 525350, 566825, 615410, 861574, 1133650, 1538525, 2153935, 3077050, 4307870, 10769675, 21539350]

約数ペア:

[(1, 21539350), (2, 10769675), (5, 4307870), (7, 3077050), (10, 2153935), (14, 1538525), (19, 1133650), (25, 861574), (35, 615410), (38, 566825), (41, 525350), (50, 430787), (70, 307705), (79, 272650), (82, 262675), (95, 226730), (133, 161950), (158, 136325), (175, 123082), (190, 113365), (205, 105070), (266, 80975), (287, 75050), (350, 61541), (395, 54530), (410, 52535), (475, 45346), (553, 38950), (574, 37525), (665, 32390), (779, 27650), (790, 27265), (950, 22673), (1025, 21014), (1106, 19475), (1330, 16195), (1435, 15010), (1501, 14350), (1558, 13825), (1975, 10906), (2050, 10507), (2765, 7790), (2870, 7505), (3002, 7175), (3239, 6650), (3325, 6478), (3895, 5530), (3950, 5453)]