21670680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{431}}^1$

素因数の和:864

約数の個数: 64

約数和(自身を含む): 65318400

約数和(自身を除く): 43647720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 419, 431, 838, 862, 1257, 1293, 1676, 1724, 2095, 2155, 2514, 2586, 3352, 3448, 4190, 4310, 5028, 5172, 6285, 6465, 8380, 8620, 10056, 10344, 12570, 12930, 16760, 17240, 25140, 25860, 50280, 51720, 180589, 361178, 541767, 722356, 902945, 1083534, 1444712, 1805890, 2167068, 2708835, 3611780, 4334136, 5417670, 7223560, 10835340, 21670680]

約数ペア:

[(1, 21670680), (2, 10835340), (3, 7223560), (4, 5417670), (5, 4334136), (6, 3611780), (8, 2708835), (10, 2167068), (12, 1805890), (15, 1444712), (20, 1083534), (24, 902945), (30, 722356), (40, 541767), (60, 361178), (120, 180589), (419, 51720), (431, 50280), (838, 25860), (862, 25140), (1257, 17240), (1293, 16760), (1676, 12930), (1724, 12570), (2095, 10344), (2155, 10056), (2514, 8620), (2586, 8380), (3352, 6465), (3448, 6285), (4190, 5172), (4310, 5028)]