21123152

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1151}}^1$

素因数の和:1227

約数の個数: 40

約数和(自身を含む): 43425792

約数和(自身を除く): 22302640

約数列:

[1, 2, 4, 8, 16, 31, 37, 62, 74, 124, 148, 248, 296, 496, 592, 1147, 1151, 2294, 2302, 4588, 4604, 9176, 9208, 18352, 18416, 35681, 42587, 71362, 85174, 142724, 170348, 285448, 340696, 570896, 681392, 1320197, 2640394, 5280788, 10561576, 21123152]

約数ペア:

[(1, 21123152), (2, 10561576), (4, 5280788), (8, 2640394), (16, 1320197), (31, 681392), (37, 570896), (62, 340696), (74, 285448), (124, 170348), (148, 142724), (248, 85174), (296, 71362), (496, 42587), (592, 35681), (1147, 18416), (1151, 18352), (2294, 9208), (2302, 9176), (4588, 4604)]