1256464720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{461}}^1$

素因数の和:669

約数の個数: 160

約数和(自身を含む): 3475777536

約数和(自身を除く): 2219312816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 157, 217, 248, 280, 310, 314, 434, 461, 496, 560, 620, 628, 785, 868, 922, 1085, 1099, 1240, 1256, 1570, 1736, 1844, 2170, 2198, 2305, 2480, 2512, 3140, 3227, 3472, 3688, 4340, 4396, 4610, 4867, 5495, 6280, 6454, 7376, 8680, 8792, 9220, 9734, 10990, 12560, 12908, 14291, 16135, 17360, 17584, 18440, 19468, 21980, 24335, 25816, 28582, 32270, 34069, 36880, 38936, 43960, 48670, 51632, 57164, 64540, 68138, 71455, 72377, 77872, 87920, 97340, 100037, 114328, 129080, 136276, 142910, 144754, 170345, 194680, 200074, 228656, 258160, 272552, 285820, 289508, 340690, 361885, 389360, 400148, 500185, 506639, 545104, 571640, 579016, 681380, 723770, 800296, 1000370, 1013278, 1143280, 1158032, 1362760, 1447540, 1600592, 2000740, 2026556, 2243687, 2533195, 2725520, 2895080, 4001480, 4053112, 4487374, 5066390, 5790160, 8002960, 8106224, 8974748, 10132780, 11218435, 15705809, 17949496, 20265560, 22436870, 31411618, 35898992, 40531120, 44873740, 62823236, 78529045, 89747480, 125646472, 157058090, 179494960, 251292944, 314116180, 628232360, 1256464720]

約数ペア:

[(1, 1256464720), (2, 628232360), (4, 314116180), (5, 251292944), (7, 179494960), (8, 157058090), (10, 125646472), (14, 89747480), (16, 78529045), (20, 62823236), (28, 44873740), (31, 40531120), (35, 35898992), (40, 31411618), (56, 22436870), (62, 20265560), (70, 17949496), (80, 15705809), (112, 11218435), (124, 10132780), (140, 8974748), (155, 8106224), (157, 8002960), (217, 5790160), (248, 5066390), (280, 4487374), (310, 4053112), (314, 4001480), (434, 2895080), (461, 2725520), (496, 2533195), (560, 2243687), (620, 2026556), (628, 2000740), (785, 1600592), (868, 1447540), (922, 1362760), (1085, 1158032), (1099, 1143280), (1240, 1013278), (1256, 1000370), (1570, 800296), (1736, 723770), (1844, 681380), (2170, 579016), (2198, 571640), (2305, 545104), (2480, 506639), (2512, 500185), (3140, 400148), (3227, 389360), (3472, 361885), (3688, 340690), (4340, 289508), (4396, 285820), (4610, 272552), (4867, 258160), (5495, 228656), (6280, 200074), (6454, 194680), (7376, 170345), (8680, 144754), (8792, 142910), (9220, 136276), (9734, 129080), (10990, 114328), (12560, 100037), (12908, 97340), (14291, 87920), (16135, 77872), (17360, 72377), (17584, 71455), (18440, 68138), (19468, 64540), (21980, 57164), (24335, 51632), (25816, 48670), (28582, 43960), (32270, 38936), (34069, 36880)]