20919512

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22626088

約数列:

[1, 2, 4, 8, 23, 41, 46, 47, 59, 82, 92, 94, 118, 164, 184, 188, 236, 328, 376, 472, 943, 1081, 1357, 1886, 1927, 2162, 2419, 2714, 2773, 3772, 3854, 4324, 4838, 5428, 5546, 7544, 7708, 8648, 9676, 10856, 11092, 15416, 19352, 22184, 44321, 55637, 63779, 88642, 111274, 113693, 127558, 177284, 222548, 227386, 255116, 354568, 445096, 454772, 510232, 909544, 2614939, 5229878, 10459756, 20919512]

約数ペア:

[(1, 20919512), (2, 10459756), (4, 5229878), (8, 2614939), (23, 909544), (41, 510232), (46, 454772), (47, 445096), (59, 354568), (82, 255116), (92, 227386), (94, 222548), (118, 177284), (164, 127558), (184, 113693), (188, 111274), (236, 88642), (328, 63779), (376, 55637), (472, 44321), (943, 22184), (1081, 19352), (1357, 15416), (1886, 11092), (1927, 10856), (2162, 9676), (2419, 8648), (2714, 7708), (2773, 7544), (3772, 5546), (3854, 5428), (4324, 4838)]