19739924

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{157}}^1$

素因数の和:264

約数の個数: 36

約数和(自身を含む): 37685844

約数和(自身を除く): 17945920

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 157, 172, 314, 628, 731, 1462, 1849, 2669, 2924, 3698, 5338, 6751, 7396, 10676, 13502, 27004, 31433, 62866, 114767, 125732, 229534, 290293, 459068, 580586, 1161172, 4934981, 9869962, 19739924]

約数ペア:

[(1, 19739924), (2, 9869962), (4, 4934981), (17, 1161172), (34, 580586), (43, 459068), (68, 290293), (86, 229534), (157, 125732), (172, 114767), (314, 62866), (628, 31433), (731, 27004), (1462, 13502), (1849, 10676), (2669, 7396), (2924, 6751), (3698, 5338)]