20728288

素因数分解:

$2^5\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 49871808

約数和(自身を除く): 29143520

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 41, 56, 61, 74, 82, 112, 122, 148, 164, 224, 244, 259, 287, 296, 328, 427, 488, 518, 574, 592, 656, 854, 976, 1036, 1148, 1184, 1312, 1517, 1708, 1952, 2072, 2257, 2296, 2501, 3034, 3416, 4144, 4514, 4592, 5002, 6068, 6832, 8288, 9028, 9184, 10004, 10619, 12136, 13664, 15799, 17507, 18056, 20008, 21238, 24272, 31598, 35014, 36112, 40016, 42476, 48544, 63196, 70028, 72224, 80032, 84952, 92537, 126392, 140056, 169904, 185074, 252784, 280112, 339808, 370148, 505568, 560224, 647759, 740296, 1295518, 1480592, 2591036, 2961184, 5182072, 10364144, 20728288]

約数ペア:

[(1, 20728288), (2, 10364144), (4, 5182072), (7, 2961184), (8, 2591036), (14, 1480592), (16, 1295518), (28, 740296), (32, 647759), (37, 560224), (41, 505568), (56, 370148), (61, 339808), (74, 280112), (82, 252784), (112, 185074), (122, 169904), (148, 140056), (164, 126392), (224, 92537), (244, 84952), (259, 80032), (287, 72224), (296, 70028), (328, 63196), (427, 48544), (488, 42476), (518, 40016), (574, 36112), (592, 35014), (656, 31598), (854, 24272), (976, 21238), (1036, 20008), (1148, 18056), (1184, 17507), (1312, 15799), (1517, 13664), (1708, 12136), (1952, 10619), (2072, 10004), (2257, 9184), (2296, 9028), (2501, 8288), (3034, 6832), (3416, 6068), (4144, 5002), (4514, 4592)]