21577972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 43218000

約数和(自身を除く): 21640028

約数列:

[1, 2, 4, 13, 26, 29, 41, 52, 58, 82, 116, 164, 349, 377, 533, 698, 754, 1066, 1189, 1396, 1508, 2132, 2378, 4537, 4756, 9074, 10121, 14309, 15457, 18148, 20242, 28618, 30914, 40484, 57236, 61828, 131573, 186017, 263146, 372034, 414961, 526292, 744068, 829922, 1659844, 5394493, 10788986, 21577972]

約数ペア:

[(1, 21577972), (2, 10788986), (4, 5394493), (13, 1659844), (26, 829922), (29, 744068), (41, 526292), (52, 414961), (58, 372034), (82, 263146), (116, 186017), (164, 131573), (349, 61828), (377, 57236), (533, 40484), (698, 30914), (754, 28618), (1066, 20242), (1189, 18148), (1396, 15457), (1508, 14309), (2132, 10121), (2378, 9074), (4537, 4756)]