18173728

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:521

約数の個数: 48

約数和(自身を含む): 38283840

約数和(自身を除く): 20110112

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 71, 76, 142, 152, 284, 304, 421, 568, 608, 842, 1136, 1349, 1684, 2272, 2698, 3368, 5396, 6736, 7999, 10792, 13472, 15998, 21584, 29891, 31996, 43168, 59782, 63992, 119564, 127984, 239128, 255968, 478256, 567929, 956512, 1135858, 2271716, 4543432, 9086864, 18173728]

約数ペア:

[(1, 18173728), (2, 9086864), (4, 4543432), (8, 2271716), (16, 1135858), (19, 956512), (32, 567929), (38, 478256), (71, 255968), (76, 239128), (142, 127984), (152, 119564), (284, 63992), (304, 59782), (421, 43168), (568, 31996), (608, 29891), (842, 21584), (1136, 15998), (1349, 13472), (1684, 10792), (2272, 7999), (2698, 6736), (3368, 5396)]