28436220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{661}}^1$

素因数の和:915

約数の個数: 72

約数和(自身を含む): 86748480

約数和(自身を除く): 58312260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 478, 661, 717, 956, 1195, 1322, 1434, 1983, 2151, 2390, 2644, 2868, 3305, 3585, 3966, 4302, 4780, 5949, 6610, 7170, 7932, 8604, 9915, 10755, 11898, 13220, 14340, 19830, 21510, 23796, 29745, 39660, 43020, 59490, 118980, 157979, 315958, 473937, 631916, 789895, 947874, 1421811, 1579790, 1895748, 2369685, 2843622, 3159580, 4739370, 5687244, 7109055, 9478740, 14218110, 28436220]

約数ペア:

[(1, 28436220), (2, 14218110), (3, 9478740), (4, 7109055), (5, 5687244), (6, 4739370), (9, 3159580), (10, 2843622), (12, 2369685), (15, 1895748), (18, 1579790), (20, 1421811), (30, 947874), (36, 789895), (45, 631916), (60, 473937), (90, 315958), (180, 157979), (239, 118980), (478, 59490), (661, 43020), (717, 39660), (956, 29745), (1195, 23796), (1322, 21510), (1434, 19830), (1983, 14340), (2151, 13220), (2390, 11898), (2644, 10755), (2868, 9915), (3305, 8604), (3585, 7932), (3966, 7170), (4302, 6610), (4780, 5949)]