18764780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 43781472

約数和(自身を除く): 25016692

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 113, 115, 190, 226, 230, 361, 380, 437, 452, 460, 565, 722, 874, 1130, 1444, 1748, 1805, 2147, 2185, 2260, 2599, 3610, 4294, 4370, 5198, 7220, 8303, 8588, 8740, 10396, 10735, 12995, 16606, 21470, 25990, 33212, 40793, 41515, 42940, 49381, 51980, 81586, 83030, 98762, 163172, 166060, 197524, 203965, 246905, 407930, 493810, 815860, 938239, 987620, 1876478, 3752956, 4691195, 9382390, 18764780]

約数ペア:

[(1, 18764780), (2, 9382390), (4, 4691195), (5, 3752956), (10, 1876478), (19, 987620), (20, 938239), (23, 815860), (38, 493810), (46, 407930), (76, 246905), (92, 203965), (95, 197524), (113, 166060), (115, 163172), (190, 98762), (226, 83030), (230, 81586), (361, 51980), (380, 49381), (437, 42940), (452, 41515), (460, 40793), (565, 33212), (722, 25990), (874, 21470), (1130, 16606), (1444, 12995), (1748, 10735), (1805, 10396), (2147, 8740), (2185, 8588), (2260, 8303), (2599, 7220), (3610, 5198), (4294, 4370)]