19996360

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{317}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 48081600

約数和(自身を除く): 28085240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 83, 95, 152, 166, 190, 317, 332, 380, 415, 634, 664, 760, 830, 1268, 1577, 1585, 1660, 2536, 3154, 3170, 3320, 6023, 6308, 6340, 7885, 12046, 12616, 12680, 15770, 24092, 26311, 30115, 31540, 48184, 52622, 60230, 63080, 105244, 120460, 131555, 210488, 240920, 263110, 499909, 526220, 999818, 1052440, 1999636, 2499545, 3999272, 4999090, 9998180, 19996360]

約数ペア:

[(1, 19996360), (2, 9998180), (4, 4999090), (5, 3999272), (8, 2499545), (10, 1999636), (19, 1052440), (20, 999818), (38, 526220), (40, 499909), (76, 263110), (83, 240920), (95, 210488), (152, 131555), (166, 120460), (190, 105244), (317, 63080), (332, 60230), (380, 52622), (415, 48184), (634, 31540), (664, 30115), (760, 26311), (830, 24092), (1268, 15770), (1577, 12680), (1585, 12616), (1660, 12046), (2536, 7885), (3154, 6340), (3170, 6308), (3320, 6023)]