20217140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{641}}^1$

素因数の和:752

約数の個数: 48

約数和(自身を含む): 45299520

約数和(自身を除く): 25082380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 641, 830, 1282, 1577, 1660, 2564, 3154, 3205, 6308, 6410, 7885, 12179, 12820, 15770, 24358, 31540, 48716, 53203, 60895, 106406, 121790, 212812, 243580, 266015, 532030, 1010857, 1064060, 2021714, 4043428, 5054285, 10108570, 20217140]

約数ペア:

[(1, 20217140), (2, 10108570), (4, 5054285), (5, 4043428), (10, 2021714), (19, 1064060), (20, 1010857), (38, 532030), (76, 266015), (83, 243580), (95, 212812), (166, 121790), (190, 106406), (332, 60895), (380, 53203), (415, 48716), (641, 31540), (830, 24358), (1282, 15770), (1577, 12820), (1660, 12179), (2564, 7885), (3154, 6410), (3205, 6308)]