28141880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:241

約数の個数: 96

約数和(自身を含む): 71940960

約数和(自身を除く): 43799080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 169, 181, 184, 230, 260, 299, 338, 362, 460, 520, 598, 676, 724, 845, 905, 920, 1196, 1352, 1448, 1495, 1690, 1810, 2353, 2392, 2990, 3380, 3620, 3887, 4163, 4706, 5980, 6760, 7240, 7774, 8326, 9412, 11765, 11960, 15548, 16652, 18824, 19435, 20815, 23530, 30589, 31096, 33304, 38870, 41630, 47060, 54119, 61178, 77740, 83260, 94120, 108238, 122356, 152945, 155480, 166520, 216476, 244712, 270595, 305890, 432952, 541190, 611780, 703547, 1082380, 1223560, 1407094, 2164760, 2814188, 3517735, 5628376, 7035470, 14070940, 28141880]

約数ペア:

[(1, 28141880), (2, 14070940), (4, 7035470), (5, 5628376), (8, 3517735), (10, 2814188), (13, 2164760), (20, 1407094), (23, 1223560), (26, 1082380), (40, 703547), (46, 611780), (52, 541190), (65, 432952), (92, 305890), (104, 270595), (115, 244712), (130, 216476), (169, 166520), (181, 155480), (184, 152945), (230, 122356), (260, 108238), (299, 94120), (338, 83260), (362, 77740), (460, 61178), (520, 54119), (598, 47060), (676, 41630), (724, 38870), (845, 33304), (905, 31096), (920, 30589), (1196, 23530), (1352, 20815), (1448, 19435), (1495, 18824), (1690, 16652), (1810, 15548), (2353, 11960), (2392, 11765), (2990, 9412), (3380, 8326), (3620, 7774), (3887, 7240), (4163, 6760), (4706, 5980)]