213481779

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{593}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 346705920

約数和(自身を除く): 133224141

約数列:

[1, 3, 7, 21, 31, 49, 79, 93, 147, 217, 237, 553, 593, 651, 1519, 1659, 1779, 2449, 3871, 4151, 4557, 7347, 11613, 12453, 17143, 18383, 29057, 46847, 51429, 55149, 87171, 120001, 128681, 140541, 327929, 360003, 386043, 900767, 983787, 1452257, 2295503, 2702301, 4356771, 6886509, 10165799, 30497397, 71160593, 213481779]

約数ペア:

[(1, 213481779), (3, 71160593), (7, 30497397), (21, 10165799), (31, 6886509), (49, 4356771), (79, 2702301), (93, 2295503), (147, 1452257), (217, 983787), (237, 900767), (553, 386043), (593, 360003), (651, 327929), (1519, 140541), (1659, 128681), (1779, 120001), (2449, 87171), (3871, 55149), (4151, 51429), (4557, 46847), (7347, 29057), (11613, 18383), (12453, 17143)]