28119728

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 120

約数和(自身を含む): 71245440

約数和(自身を除く): 43125712

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 49, 52, 56, 62, 89, 91, 98, 104, 112, 124, 178, 182, 196, 208, 217, 248, 356, 364, 392, 403, 434, 496, 623, 637, 712, 728, 784, 806, 868, 1157, 1246, 1274, 1424, 1456, 1519, 1612, 1736, 2314, 2492, 2548, 2759, 2821, 3038, 3224, 3472, 4361, 4628, 4984, 5096, 5518, 5642, 6076, 6448, 8099, 8722, 9256, 9968, 10192, 11036, 11284, 12152, 16198, 17444, 18512, 19313, 19747, 22072, 22568, 24304, 32396, 34888, 35867, 38626, 39494, 44144, 45136, 56693, 64792, 69776, 71734, 77252, 78988, 113386, 129584, 135191, 143468, 154504, 157976, 226772, 251069, 270382, 286936, 309008, 315952, 453544, 502138, 540764, 573872, 907088, 1004276, 1081528, 1757483, 2008552, 2163056, 3514966, 4017104, 7029932, 14059864, 28119728]

約数ペア:

[(1, 28119728), (2, 14059864), (4, 7029932), (7, 4017104), (8, 3514966), (13, 2163056), (14, 2008552), (16, 1757483), (26, 1081528), (28, 1004276), (31, 907088), (49, 573872), (52, 540764), (56, 502138), (62, 453544), (89, 315952), (91, 309008), (98, 286936), (104, 270382), (112, 251069), (124, 226772), (178, 157976), (182, 154504), (196, 143468), (208, 135191), (217, 129584), (248, 113386), (356, 78988), (364, 77252), (392, 71734), (403, 69776), (434, 64792), (496, 56693), (623, 45136), (637, 44144), (712, 39494), (728, 38626), (784, 35867), (806, 34888), (868, 32396), (1157, 24304), (1246, 22568), (1274, 22072), (1424, 19747), (1456, 19313), (1519, 18512), (1612, 17444), (1736, 16198), (2314, 12152), (2492, 11284), (2548, 11036), (2759, 10192), (2821, 9968), (3038, 9256), (3224, 8722), (3472, 8099), (4361, 6448), (4628, 6076), (4984, 5642), (5096, 5518)]