21102928

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2447}}^1$

素因数の和:2480

約数の個数: 60

約数和(自身を含む): 51907392

約数和(自身を除く): 30804464

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 49, 56, 77, 88, 98, 112, 154, 176, 196, 308, 392, 539, 616, 784, 1078, 1232, 2156, 2447, 4312, 4894, 8624, 9788, 17129, 19576, 26917, 34258, 39152, 53834, 68516, 107668, 119903, 137032, 188419, 215336, 239806, 274064, 376838, 430672, 479612, 753676, 959224, 1318933, 1507352, 1918448, 2637866, 3014704, 5275732, 10551464, 21102928]

約数ペア:

[(1, 21102928), (2, 10551464), (4, 5275732), (7, 3014704), (8, 2637866), (11, 1918448), (14, 1507352), (16, 1318933), (22, 959224), (28, 753676), (44, 479612), (49, 430672), (56, 376838), (77, 274064), (88, 239806), (98, 215336), (112, 188419), (154, 137032), (176, 119903), (196, 107668), (308, 68516), (392, 53834), (539, 39152), (616, 34258), (784, 26917), (1078, 19576), (1232, 17129), (2156, 9788), (2447, 8624), (4312, 4894)]