20294456

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 47705280

約数和(自身を除く): 27410824

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 61, 91, 104, 122, 182, 244, 364, 427, 457, 488, 728, 793, 854, 914, 1586, 1708, 1828, 3172, 3199, 3416, 3656, 5551, 5941, 6344, 6398, 11102, 11882, 12796, 22204, 23764, 25592, 27877, 41587, 44408, 47528, 55754, 83174, 111508, 166348, 195139, 223016, 332696, 362401, 390278, 724802, 780556, 1449604, 1561112, 2536807, 2899208, 5073614, 10147228, 20294456]

約数ペア:

[(1, 20294456), (2, 10147228), (4, 5073614), (7, 2899208), (8, 2536807), (13, 1561112), (14, 1449604), (26, 780556), (28, 724802), (52, 390278), (56, 362401), (61, 332696), (91, 223016), (104, 195139), (122, 166348), (182, 111508), (244, 83174), (364, 55754), (427, 47528), (457, 44408), (488, 41587), (728, 27877), (793, 25592), (854, 23764), (914, 22204), (1586, 12796), (1708, 11882), (1828, 11102), (3172, 6398), (3199, 6344), (3416, 5941), (3656, 5551)]