28677640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{233}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 68992560

約数和(自身を除く): 40314920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 181, 233, 340, 362, 466, 680, 724, 905, 932, 1165, 1448, 1810, 1864, 2330, 3077, 3620, 3961, 4660, 6154, 7240, 7922, 9320, 12308, 15385, 15844, 19805, 24616, 30770, 31688, 39610, 42173, 61540, 79220, 84346, 123080, 158440, 168692, 210865, 337384, 421730, 716941, 843460, 1433882, 1686920, 2867764, 3584705, 5735528, 7169410, 14338820, 28677640]

約数ペア:

[(1, 28677640), (2, 14338820), (4, 7169410), (5, 5735528), (8, 3584705), (10, 2867764), (17, 1686920), (20, 1433882), (34, 843460), (40, 716941), (68, 421730), (85, 337384), (136, 210865), (170, 168692), (181, 158440), (233, 123080), (340, 84346), (362, 79220), (466, 61540), (680, 42173), (724, 39610), (905, 31688), (932, 30770), (1165, 24616), (1448, 19805), (1810, 15844), (1864, 15385), (2330, 12308), (3077, 9320), (3620, 7922), (3961, 7240), (4660, 6154)]