16989280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1$

素因数の和:237

約数の個数: 144

約数和(自身を含む): 51193296

約数和(自身を除く): 34204016

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 160, 176, 196, 197, 220, 224, 245, 280, 308, 352, 385, 392, 394, 440, 490, 539, 560, 616, 770, 784, 788, 880, 980, 985, 1078, 1120, 1232, 1379, 1540, 1568, 1576, 1760, 1960, 1970, 2156, 2167, 2464, 2695, 2758, 3080, 3152, 3920, 3940, 4312, 4334, 5390, 5516, 6160, 6304, 6895, 7840, 7880, 8624, 8668, 9653, 10780, 10835, 11032, 12320, 13790, 15169, 15760, 17248, 17336, 19306, 21560, 21670, 22064, 27580, 30338, 31520, 34672, 38612, 43120, 43340, 44128, 48265, 55160, 60676, 69344, 75845, 77224, 86240, 86680, 96530, 106183, 110320, 121352, 151690, 154448, 173360, 193060, 212366, 220640, 242704, 303380, 308896, 346720, 386120, 424732, 485408, 530915, 606760, 772240, 849464, 1061830, 1213520, 1544480, 1698928, 2123660, 2427040, 3397856, 4247320, 8494640, 16989280]

約数ペア:

[(1, 16989280), (2, 8494640), (4, 4247320), (5, 3397856), (7, 2427040), (8, 2123660), (10, 1698928), (11, 1544480), (14, 1213520), (16, 1061830), (20, 849464), (22, 772240), (28, 606760), (32, 530915), (35, 485408), (40, 424732), (44, 386120), (49, 346720), (55, 308896), (56, 303380), (70, 242704), (77, 220640), (80, 212366), (88, 193060), (98, 173360), (110, 154448), (112, 151690), (140, 121352), (154, 110320), (160, 106183), (176, 96530), (196, 86680), (197, 86240), (220, 77224), (224, 75845), (245, 69344), (280, 60676), (308, 55160), (352, 48265), (385, 44128), (392, 43340), (394, 43120), (440, 38612), (490, 34672), (539, 31520), (560, 30338), (616, 27580), (770, 22064), (784, 21670), (788, 21560), (880, 19306), (980, 17336), (985, 17248), (1078, 15760), (1120, 15169), (1232, 13790), (1379, 12320), (1540, 11032), (1568, 10835), (1576, 10780), (1760, 9653), (1960, 8668), (1970, 8624), (2156, 7880), (2167, 7840), (2464, 6895), (2695, 6304), (2758, 6160), (3080, 5516), (3152, 5390), (3920, 4334), (3940, 4312)]