18639342

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 44870400

約数和(自身を除く): 26231058

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 37, 38, 54, 57, 74, 111, 114, 171, 222, 333, 342, 491, 513, 666, 703, 982, 999, 1026, 1406, 1473, 1998, 2109, 2946, 4218, 4419, 6327, 8838, 9329, 12654, 13257, 18167, 18658, 18981, 26514, 27987, 36334, 37962, 54501, 55974, 83961, 109002, 163503, 167922, 251883, 327006, 345173, 490509, 503766, 690346, 981018, 1035519, 2071038, 3106557, 6213114, 9319671, 18639342]

約数ペア:

[(1, 18639342), (2, 9319671), (3, 6213114), (6, 3106557), (9, 2071038), (18, 1035519), (19, 981018), (27, 690346), (37, 503766), (38, 490509), (54, 345173), (57, 327006), (74, 251883), (111, 167922), (114, 163503), (171, 109002), (222, 83961), (333, 55974), (342, 54501), (491, 37962), (513, 36334), (666, 27987), (703, 26514), (982, 18981), (999, 18658), (1026, 18167), (1406, 13257), (1473, 12654), (1998, 9329), (2109, 8838), (2946, 6327), (4218, 4419)]