20313776

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:306

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 28540240

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 47, 56, 68, 94, 112, 119, 136, 188, 227, 238, 272, 329, 376, 454, 476, 658, 752, 799, 908, 952, 1316, 1589, 1598, 1816, 1904, 2632, 3178, 3196, 3632, 3859, 5264, 5593, 6356, 6392, 7718, 10669, 11186, 12712, 12784, 15436, 21338, 22372, 25424, 27013, 30872, 42676, 44744, 54026, 61744, 74683, 85352, 89488, 108052, 149366, 170704, 181373, 216104, 298732, 362746, 432208, 597464, 725492, 1194928, 1269611, 1450984, 2539222, 2901968, 5078444, 10156888, 20313776]

約数ペア:

[(1, 20313776), (2, 10156888), (4, 5078444), (7, 2901968), (8, 2539222), (14, 1450984), (16, 1269611), (17, 1194928), (28, 725492), (34, 597464), (47, 432208), (56, 362746), (68, 298732), (94, 216104), (112, 181373), (119, 170704), (136, 149366), (188, 108052), (227, 89488), (238, 85352), (272, 74683), (329, 61744), (376, 54026), (454, 44744), (476, 42676), (658, 30872), (752, 27013), (799, 25424), (908, 22372), (952, 21338), (1316, 15436), (1589, 12784), (1598, 12712), (1816, 11186), (1904, 10669), (2632, 7718), (3178, 6392), (3196, 6356), (3632, 5593), (3859, 5264)]