20568224

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 42325416

約数和(自身を除く): 21757192

約数列:

[1, 2, 4, 8, 16, 32, 41, 61, 82, 122, 164, 244, 257, 328, 488, 514, 656, 976, 1028, 1312, 1952, 2056, 2501, 4112, 5002, 8224, 10004, 10537, 15677, 20008, 21074, 31354, 40016, 42148, 62708, 80032, 84296, 125416, 168592, 250832, 337184, 501664, 642757, 1285514, 2571028, 5142056, 10284112, 20568224]

約数ペア:

[(1, 20568224), (2, 10284112), (4, 5142056), (8, 2571028), (16, 1285514), (32, 642757), (41, 501664), (61, 337184), (82, 250832), (122, 168592), (164, 125416), (244, 84296), (257, 80032), (328, 62708), (488, 42148), (514, 40016), (656, 31354), (976, 21074), (1028, 20008), (1312, 15677), (1952, 10537), (2056, 10004), (2501, 8224), (4112, 5002)]