28191760

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:236

約数の個数: 80

約数和(自身を含む): 68500080

約数和(自身を除く): 40308320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 61, 80, 106, 109, 122, 212, 218, 244, 265, 305, 424, 436, 488, 530, 545, 610, 848, 872, 976, 1060, 1090, 1220, 1744, 2120, 2180, 2440, 3233, 4240, 4360, 4880, 5777, 6466, 6649, 8720, 11554, 12932, 13298, 16165, 23108, 25864, 26596, 28885, 32330, 33245, 46216, 51728, 53192, 57770, 64660, 66490, 92432, 106384, 115540, 129320, 132980, 231080, 258640, 265960, 352397, 462160, 531920, 704794, 1409588, 1761985, 2819176, 3523970, 5638352, 7047940, 14095880, 28191760]

約数ペア:

[(1, 28191760), (2, 14095880), (4, 7047940), (5, 5638352), (8, 3523970), (10, 2819176), (16, 1761985), (20, 1409588), (40, 704794), (53, 531920), (61, 462160), (80, 352397), (106, 265960), (109, 258640), (122, 231080), (212, 132980), (218, 129320), (244, 115540), (265, 106384), (305, 92432), (424, 66490), (436, 64660), (488, 57770), (530, 53192), (545, 51728), (610, 46216), (848, 33245), (872, 32330), (976, 28885), (1060, 26596), (1090, 25864), (1220, 23108), (1744, 16165), (2120, 13298), (2180, 12932), (2440, 11554), (3233, 8720), (4240, 6649), (4360, 6466), (4880, 5777)]