20369720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3163}}^1$

素因数の和:3204

約数の個数: 64

約数和(自身を含む): 54673920

約数和(自身を除く): 34304200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3163, 3220, 6326, 6440, 12652, 15815, 22141, 25304, 31630, 44282, 63260, 72749, 88564, 110705, 126520, 145498, 177128, 221410, 290996, 363745, 442820, 509243, 581992, 727490, 885640, 1018486, 1454980, 2036972, 2546215, 2909960, 4073944, 5092430, 10184860, 20369720]

約数ペア:

[(1, 20369720), (2, 10184860), (4, 5092430), (5, 4073944), (7, 2909960), (8, 2546215), (10, 2036972), (14, 1454980), (20, 1018486), (23, 885640), (28, 727490), (35, 581992), (40, 509243), (46, 442820), (56, 363745), (70, 290996), (92, 221410), (115, 177128), (140, 145498), (161, 126520), (184, 110705), (230, 88564), (280, 72749), (322, 63260), (460, 44282), (644, 31630), (805, 25304), (920, 22141), (1288, 15815), (1610, 12652), (3163, 6440), (3220, 6326)]