21256352

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1381}}^1$

素因数の和:1441

約数の個数: 48

約数和(自身を含む): 46319112

約数和(自身を除く): 25062760

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 74, 104, 148, 208, 296, 416, 481, 592, 962, 1184, 1381, 1924, 2762, 3848, 5524, 7696, 11048, 15392, 17953, 22096, 35906, 44192, 51097, 71812, 102194, 143624, 204388, 287248, 408776, 574496, 664261, 817552, 1328522, 1635104, 2657044, 5314088, 10628176, 21256352]

約数ペア:

[(1, 21256352), (2, 10628176), (4, 5314088), (8, 2657044), (13, 1635104), (16, 1328522), (26, 817552), (32, 664261), (37, 574496), (52, 408776), (74, 287248), (104, 204388), (148, 143624), (208, 102194), (296, 71812), (416, 51097), (481, 44192), (592, 35906), (962, 22096), (1184, 17953), (1381, 15392), (1924, 11048), (2762, 7696), (3848, 5524)]