18943568

素因数分解:

$2^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2141}}^1$

素因数の和:2235

約数の個数: 40

約数和(自身を含む): 42497280

約数和(自身を除く): 23553712

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 79, 112, 158, 316, 553, 632, 1106, 1264, 2141, 2212, 4282, 4424, 8564, 8848, 14987, 17128, 29974, 34256, 59948, 119896, 169139, 239792, 338278, 676556, 1183973, 1353112, 2367946, 2706224, 4735892, 9471784, 18943568]

約数ペア:

[(1, 18943568), (2, 9471784), (4, 4735892), (7, 2706224), (8, 2367946), (14, 1353112), (16, 1183973), (28, 676556), (56, 338278), (79, 239792), (112, 169139), (158, 119896), (316, 59948), (553, 34256), (632, 29974), (1106, 17128), (1264, 14987), (2141, 8848), (2212, 8564), (4282, 4424)]