19694992

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:631

約数の個数: 40

約数和(自身を含む): 40265280

約数和(自身を除く): 20570288

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 109, 184, 218, 368, 436, 491, 872, 982, 1744, 1964, 2507, 3928, 5014, 7856, 10028, 11293, 20056, 22586, 40112, 45172, 53519, 90344, 107038, 180688, 214076, 428152, 856304, 1230937, 2461874, 4923748, 9847496, 19694992]

約数ペア:

[(1, 19694992), (2, 9847496), (4, 4923748), (8, 2461874), (16, 1230937), (23, 856304), (46, 428152), (92, 214076), (109, 180688), (184, 107038), (218, 90344), (368, 53519), (436, 45172), (491, 40112), (872, 22586), (982, 20056), (1744, 11293), (1964, 10028), (2507, 7856), (3928, 5014)]