21050624

素因数分解:

$2^8\times 7^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:731

約数の個数: 72

約数和(自身を含む): 50920128

約数和(自身を除く): 29869504

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 224, 238, 256, 272, 448, 476, 544, 691, 896, 952, 1088, 1382, 1792, 1904, 2176, 2764, 3808, 4352, 4837, 5528, 7616, 9674, 11056, 11747, 15232, 19348, 22112, 23494, 30464, 38696, 44224, 46988, 77392, 82229, 88448, 93976, 154784, 164458, 176896, 187952, 309568, 328916, 375904, 619136, 657832, 751808, 1238272, 1315664, 1503616, 2631328, 3007232, 5262656, 10525312, 21050624]

約数ペア:

[(1, 21050624), (2, 10525312), (4, 5262656), (7, 3007232), (8, 2631328), (14, 1503616), (16, 1315664), (17, 1238272), (28, 751808), (32, 657832), (34, 619136), (56, 375904), (64, 328916), (68, 309568), (112, 187952), (119, 176896), (128, 164458), (136, 154784), (224, 93976), (238, 88448), (256, 82229), (272, 77392), (448, 46988), (476, 44224), (544, 38696), (691, 30464), (896, 23494), (952, 22112), (1088, 19348), (1382, 15232), (1792, 11747), (1904, 11056), (2176, 9674), (2764, 7616), (3808, 5528), (4352, 4837)]