19686156680

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{347}}^1\times {\mathrm{23251}}^1$

素因数の和:23670

約数の個数: 64

約数和(自身を含む): 45151663680

約数和(自身を除く): 25465507000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 347, 488, 610, 694, 1220, 1388, 1735, 2440, 2776, 3470, 6940, 13880, 21167, 23251, 42334, 46502, 84668, 93004, 105835, 116255, 169336, 186008, 211670, 232510, 423340, 465020, 846680, 930040, 1418311, 2836622, 5673244, 7091555, 8068097, 11346488, 14183110, 16136194, 28366220, 32272388, 40340485, 56732440, 64544776, 80680970, 161361940, 322723880, 492153917, 984307834, 1968615668, 2460769585, 3937231336, 4921539170, 9843078340, 19686156680]

約数ペア:

[(1, 19686156680), (2, 9843078340), (4, 4921539170), (5, 3937231336), (8, 2460769585), (10, 1968615668), (20, 984307834), (40, 492153917), (61, 322723880), (122, 161361940), (244, 80680970), (305, 64544776), (347, 56732440), (488, 40340485), (610, 32272388), (694, 28366220), (1220, 16136194), (1388, 14183110), (1735, 11346488), (2440, 8068097), (2776, 7091555), (3470, 5673244), (6940, 2836622), (13880, 1418311), (21167, 930040), (23251, 846680), (42334, 465020), (46502, 423340), (84668, 232510), (93004, 211670), (105835, 186008), (116255, 169336)]