20551376

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 41068800

約数和(自身を除く): 20517424

約数列:

[1, 2, 4, 8, 16, 71, 79, 142, 158, 229, 284, 316, 458, 568, 632, 916, 1136, 1264, 1832, 3664, 5609, 11218, 16259, 18091, 22436, 32518, 36182, 44872, 65036, 72364, 89744, 130072, 144728, 260144, 289456, 1284461, 2568922, 5137844, 10275688, 20551376]

約数ペア:

[(1, 20551376), (2, 10275688), (4, 5137844), (8, 2568922), (16, 1284461), (71, 289456), (79, 260144), (142, 144728), (158, 130072), (229, 89744), (284, 72364), (316, 65036), (458, 44872), (568, 36182), (632, 32518), (916, 22436), (1136, 18091), (1264, 16259), (1832, 11218), (3664, 5609)]