19400108

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{239}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 42147840

約数和(自身を除く): 22747732

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 223, 239, 364, 446, 478, 892, 956, 1561, 1673, 2899, 3107, 3122, 3346, 5798, 6214, 6244, 6692, 11596, 12428, 20293, 21749, 40586, 43498, 53297, 81172, 86996, 106594, 213188, 373079, 692861, 746158, 1385722, 1492316, 2771444, 4850027, 9700054, 19400108]

約数ペア:

[(1, 19400108), (2, 9700054), (4, 4850027), (7, 2771444), (13, 1492316), (14, 1385722), (26, 746158), (28, 692861), (52, 373079), (91, 213188), (182, 106594), (223, 86996), (239, 81172), (364, 53297), (446, 43498), (478, 40586), (892, 21749), (956, 20293), (1561, 12428), (1673, 11596), (2899, 6692), (3107, 6244), (3122, 6214), (3346, 5798)]