420180176

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:604

約数の個数: 80

約数和(自身を含む): 907441920

約数和(自身を除く): 487261744

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 109, 172, 208, 218, 344, 431, 436, 559, 688, 862, 872, 1118, 1417, 1724, 1744, 2236, 2834, 3448, 4472, 4687, 5603, 5668, 6896, 8944, 9374, 11206, 11336, 18533, 18748, 22412, 22672, 37066, 37496, 44824, 46979, 60931, 74132, 74992, 89648, 93958, 121862, 148264, 187916, 240929, 243724, 296528, 375832, 481858, 487448, 610727, 751664, 963716, 974896, 1221454, 1927432, 2020097, 2442908, 3854864, 4040194, 4885816, 8080388, 9771632, 16160776, 26261261, 32321552, 52522522, 105045044, 210090088, 420180176]

約数ペア:

[(1, 420180176), (2, 210090088), (4, 105045044), (8, 52522522), (13, 32321552), (16, 26261261), (26, 16160776), (43, 9771632), (52, 8080388), (86, 4885816), (104, 4040194), (109, 3854864), (172, 2442908), (208, 2020097), (218, 1927432), (344, 1221454), (431, 974896), (436, 963716), (559, 751664), (688, 610727), (862, 487448), (872, 481858), (1118, 375832), (1417, 296528), (1724, 243724), (1744, 240929), (2236, 187916), (2834, 148264), (3448, 121862), (4472, 93958), (4687, 89648), (5603, 74992), (5668, 74132), (6896, 60931), (8944, 46979), (9374, 44824), (11206, 37496), (11336, 37066), (18533, 22672), (18748, 22412)]