21990300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{3187}}^1$

素因数の和:3227

約数の個数: 72

約数和(自身を含む): 66412416

約数和(自身を除く): 44422116

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 25, 30, 46, 50, 60, 69, 75, 92, 100, 115, 138, 150, 230, 276, 300, 345, 460, 575, 690, 1150, 1380, 1725, 2300, 3187, 3450, 6374, 6900, 9561, 12748, 15935, 19122, 31870, 38244, 47805, 63740, 73301, 79675, 95610, 146602, 159350, 191220, 219903, 239025, 293204, 318700, 366505, 439806, 478050, 733010, 879612, 956100, 1099515, 1466020, 1832525, 2199030, 3665050, 4398060, 5497575, 7330100, 10995150, 21990300]

約数ペア:

[(1, 21990300), (2, 10995150), (3, 7330100), (4, 5497575), (5, 4398060), (6, 3665050), (10, 2199030), (12, 1832525), (15, 1466020), (20, 1099515), (23, 956100), (25, 879612), (30, 733010), (46, 478050), (50, 439806), (60, 366505), (69, 318700), (75, 293204), (92, 239025), (100, 219903), (115, 191220), (138, 159350), (150, 146602), (230, 95610), (276, 79675), (300, 73301), (345, 63740), (460, 47805), (575, 38244), (690, 31870), (1150, 19122), (1380, 15935), (1725, 12748), (2300, 9561), (3187, 6900), (3450, 6374)]