28778204

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{457}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 62478528

約数和(自身を除く): 33700324

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 173, 182, 346, 364, 457, 692, 914, 1211, 1828, 2249, 2422, 3199, 4498, 4844, 5941, 6398, 8996, 11882, 12796, 15743, 23764, 31486, 41587, 62972, 79061, 83174, 158122, 166348, 316244, 553427, 1027793, 1106854, 2055586, 2213708, 4111172, 7194551, 14389102, 28778204]

約数ペア:

[(1, 28778204), (2, 14389102), (4, 7194551), (7, 4111172), (13, 2213708), (14, 2055586), (26, 1106854), (28, 1027793), (52, 553427), (91, 316244), (173, 166348), (182, 158122), (346, 83174), (364, 79061), (457, 62972), (692, 41587), (914, 31486), (1211, 23764), (1828, 15743), (2249, 12796), (2422, 11882), (3199, 8996), (4498, 6398), (4844, 5941)]