28185320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 67813200

約数和(自身を除く): 39627880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 181, 229, 340, 362, 458, 680, 724, 905, 916, 1145, 1448, 1810, 1832, 2290, 3077, 3620, 3893, 4580, 6154, 7240, 7786, 9160, 12308, 15385, 15572, 19465, 24616, 30770, 31144, 38930, 41449, 61540, 77860, 82898, 123080, 155720, 165796, 207245, 331592, 414490, 704633, 828980, 1409266, 1657960, 2818532, 3523165, 5637064, 7046330, 14092660, 28185320]

約数ペア:

[(1, 28185320), (2, 14092660), (4, 7046330), (5, 5637064), (8, 3523165), (10, 2818532), (17, 1657960), (20, 1409266), (34, 828980), (40, 704633), (68, 414490), (85, 331592), (136, 207245), (170, 165796), (181, 155720), (229, 123080), (340, 82898), (362, 77860), (458, 61540), (680, 41449), (724, 38930), (905, 31144), (916, 30770), (1145, 24616), (1448, 19465), (1810, 15572), (1832, 15385), (2290, 12308), (3077, 9160), (3620, 7786), (3893, 7240), (4580, 6154)]