218551480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{1811}}^1$

素因数の和:2260

約数の個数: 64

約数和(自身を含む): 563604480

約数和(自身を除く): 345053000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 431, 862, 1724, 1811, 2155, 3017, 3448, 3622, 4310, 6034, 7244, 8620, 9055, 12068, 12677, 14488, 15085, 17240, 18110, 24136, 25354, 30170, 36220, 50708, 60340, 63385, 72440, 101416, 120680, 126770, 253540, 507080, 780541, 1561082, 3122164, 3902705, 5463787, 6244328, 7805410, 10927574, 15610820, 21855148, 27318935, 31221640, 43710296, 54637870, 109275740, 218551480]

約数ペア:

[(1, 218551480), (2, 109275740), (4, 54637870), (5, 43710296), (7, 31221640), (8, 27318935), (10, 21855148), (14, 15610820), (20, 10927574), (28, 7805410), (35, 6244328), (40, 5463787), (56, 3902705), (70, 3122164), (140, 1561082), (280, 780541), (431, 507080), (862, 253540), (1724, 126770), (1811, 120680), (2155, 101416), (3017, 72440), (3448, 63385), (3622, 60340), (4310, 50708), (6034, 36220), (7244, 30170), (8620, 25354), (9055, 24136), (12068, 18110), (12677, 17240), (14488, 15085)]