19790320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{523}}^1$

素因数の和:590

約数の個数: 80

約数和(自身を含む): 51460992

約数和(自身を除く): 31670672

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 523, 688, 860, 880, 946, 1046, 1720, 1892, 2092, 2365, 2615, 3440, 3784, 4184, 4730, 5230, 5753, 7568, 8368, 9460, 10460, 11506, 18920, 20920, 22489, 23012, 28765, 37840, 41840, 44978, 46024, 57530, 89956, 92048, 112445, 115060, 179912, 224890, 230120, 247379, 359824, 449780, 460240, 494758, 899560, 989516, 1236895, 1799120, 1979032, 2473790, 3958064, 4947580, 9895160, 19790320]

約数ペア:

[(1, 19790320), (2, 9895160), (4, 4947580), (5, 3958064), (8, 2473790), (10, 1979032), (11, 1799120), (16, 1236895), (20, 989516), (22, 899560), (40, 494758), (43, 460240), (44, 449780), (55, 359824), (80, 247379), (86, 230120), (88, 224890), (110, 179912), (172, 115060), (176, 112445), (215, 92048), (220, 89956), (344, 57530), (430, 46024), (440, 44978), (473, 41840), (523, 37840), (688, 28765), (860, 23012), (880, 22489), (946, 20920), (1046, 18920), (1720, 11506), (1892, 10460), (2092, 9460), (2365, 8368), (2615, 7568), (3440, 5753), (3784, 5230), (4184, 4730)]