21066400

素因数分解:

$2^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{1549}}^1$

素因数の和:1586

約数の個数: 72

約数和(自身を含む): 54488700

約数和(自身を除く): 33422300

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 68, 80, 85, 100, 136, 160, 170, 200, 272, 340, 400, 425, 544, 680, 800, 850, 1360, 1549, 1700, 2720, 3098, 3400, 6196, 6800, 7745, 12392, 13600, 15490, 24784, 26333, 30980, 38725, 49568, 52666, 61960, 77450, 105332, 123920, 131665, 154900, 210664, 247840, 263330, 309800, 421328, 526660, 619600, 658325, 842656, 1053320, 1239200, 1316650, 2106640, 2633300, 4213280, 5266600, 10533200, 21066400]

約数ペア:

[(1, 21066400), (2, 10533200), (4, 5266600), (5, 4213280), (8, 2633300), (10, 2106640), (16, 1316650), (17, 1239200), (20, 1053320), (25, 842656), (32, 658325), (34, 619600), (40, 526660), (50, 421328), (68, 309800), (80, 263330), (85, 247840), (100, 210664), (136, 154900), (160, 131665), (170, 123920), (200, 105332), (272, 77450), (340, 61960), (400, 52666), (425, 49568), (544, 38725), (680, 30980), (800, 26333), (850, 24784), (1360, 15490), (1549, 13600), (1700, 12392), (2720, 7745), (3098, 6800), (3400, 6196)]