19935650

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:208

約数の個数: 72

約数和(自身を含む): 44104320

約数和(自身を除く): 24168670

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 79, 98, 103, 158, 175, 206, 245, 350, 395, 490, 515, 553, 721, 790, 1030, 1106, 1225, 1442, 1975, 2450, 2575, 2765, 3605, 3871, 3950, 5047, 5150, 5530, 7210, 7742, 8137, 10094, 13825, 16274, 18025, 19355, 25235, 27650, 36050, 38710, 40685, 50470, 56959, 81370, 96775, 113918, 126175, 193550, 203425, 252350, 284795, 398713, 406850, 569590, 797426, 1423975, 1993565, 2847950, 3987130, 9967825, 19935650]

約数ペア:

[(1, 19935650), (2, 9967825), (5, 3987130), (7, 2847950), (10, 1993565), (14, 1423975), (25, 797426), (35, 569590), (49, 406850), (50, 398713), (70, 284795), (79, 252350), (98, 203425), (103, 193550), (158, 126175), (175, 113918), (206, 96775), (245, 81370), (350, 56959), (395, 50470), (490, 40685), (515, 38710), (553, 36050), (721, 27650), (790, 25235), (1030, 19355), (1106, 18025), (1225, 16274), (1442, 13825), (1975, 10094), (2450, 8137), (2575, 7742), (2765, 7210), (3605, 5530), (3871, 5150), (3950, 5047)]