19409830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 21958490

約数列:

[1, 2, 5, 10, 11, 19, 22, 37, 38, 55, 74, 95, 110, 185, 190, 209, 251, 370, 407, 418, 502, 703, 814, 1045, 1255, 1406, 2035, 2090, 2510, 2761, 3515, 4070, 4769, 5522, 7030, 7733, 9287, 9538, 13805, 15466, 18574, 23845, 27610, 38665, 46435, 47690, 52459, 77330, 92870, 102157, 104918, 176453, 204314, 262295, 352906, 510785, 524590, 882265, 1021570, 1764530, 1940983, 3881966, 9704915, 19409830]

約数ペア:

[(1, 19409830), (2, 9704915), (5, 3881966), (10, 1940983), (11, 1764530), (19, 1021570), (22, 882265), (37, 524590), (38, 510785), (55, 352906), (74, 262295), (95, 204314), (110, 176453), (185, 104918), (190, 102157), (209, 92870), (251, 77330), (370, 52459), (407, 47690), (418, 46435), (502, 38665), (703, 27610), (814, 23845), (1045, 18574), (1255, 15466), (1406, 13805), (2035, 9538), (2090, 9287), (2510, 7733), (2761, 7030), (3515, 5522), (4070, 4769)]