19653712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1549}}^1$

素因数の和:1631

約数の個数: 40

約数和(自身を含む): 41707400

約数和(自身を除く): 22053688

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1549, 1586, 3098, 3172, 6196, 6344, 12392, 12688, 20137, 24784, 40274, 80548, 94489, 161096, 188978, 322192, 377956, 755912, 1228357, 1511824, 2456714, 4913428, 9826856, 19653712]

約数ペア:

[(1, 19653712), (2, 9826856), (4, 4913428), (8, 2456714), (13, 1511824), (16, 1228357), (26, 755912), (52, 377956), (61, 322192), (104, 188978), (122, 161096), (208, 94489), (244, 80548), (488, 40274), (793, 24784), (976, 20137), (1549, 12688), (1586, 12392), (3098, 6344), (3172, 6196)]