21881648

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{613}}^1$

素因数の和:741

約数の個数: 40

約数和(自身を含む): 44767968

約数和(自身を除く): 22886320

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 97, 184, 194, 368, 388, 613, 776, 1226, 1552, 2231, 2452, 4462, 4904, 8924, 9808, 14099, 17848, 28198, 35696, 56396, 59461, 112792, 118922, 225584, 237844, 475688, 951376, 1367603, 2735206, 5470412, 10940824, 21881648]

約数ペア:

[(1, 21881648), (2, 10940824), (4, 5470412), (8, 2735206), (16, 1367603), (23, 951376), (46, 475688), (92, 237844), (97, 225584), (184, 118922), (194, 112792), (368, 59461), (388, 56396), (613, 35696), (776, 28198), (1226, 17848), (1552, 14099), (2231, 9808), (2452, 8924), (4462, 4904)]