28713840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{661}}^1$

素因数の和:858

約数の個数: 80

約数和(自身を含む): 89640096

約数和(自身を除く): 60926256

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 181, 240, 362, 543, 661, 724, 905, 1086, 1322, 1448, 1810, 1983, 2172, 2644, 2715, 2896, 3305, 3620, 3966, 4344, 5288, 5430, 6610, 7240, 7932, 8688, 9915, 10576, 10860, 13220, 14480, 15864, 19830, 21720, 26440, 31728, 39660, 43440, 52880, 79320, 119641, 158640, 239282, 358923, 478564, 598205, 717846, 957128, 1196410, 1435692, 1794615, 1914256, 2392820, 2871384, 3589230, 4785640, 5742768, 7178460, 9571280, 14356920, 28713840]

約数ペア:

[(1, 28713840), (2, 14356920), (3, 9571280), (4, 7178460), (5, 5742768), (6, 4785640), (8, 3589230), (10, 2871384), (12, 2392820), (15, 1914256), (16, 1794615), (20, 1435692), (24, 1196410), (30, 957128), (40, 717846), (48, 598205), (60, 478564), (80, 358923), (120, 239282), (181, 158640), (240, 119641), (362, 79320), (543, 52880), (661, 43440), (724, 39660), (905, 31728), (1086, 26440), (1322, 21720), (1448, 19830), (1810, 15864), (1983, 14480), (2172, 13220), (2644, 10860), (2715, 10576), (2896, 9915), (3305, 8688), (3620, 7932), (3966, 7240), (4344, 6610), (5288, 5430)]