20512606720

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{5081}}^1$

素因数の和:5206

約数の個数: 160

約数和(自身を含む): 52404770880

約数和(自身を除く): 31892164160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 83, 95, 128, 152, 160, 166, 190, 256, 304, 320, 332, 380, 415, 512, 608, 640, 664, 760, 830, 1216, 1280, 1328, 1520, 1577, 1660, 2432, 2560, 2656, 3040, 3154, 3320, 4864, 5081, 5312, 6080, 6308, 6640, 7885, 9728, 10162, 10624, 12160, 12616, 13280, 15770, 20324, 21248, 24320, 25232, 25405, 26560, 31540, 40648, 42496, 48640, 50464, 50810, 53120, 63080, 81296, 96539, 100928, 101620, 106240, 126160, 162592, 193078, 201856, 203240, 212480, 252320, 325184, 386156, 403712, 406480, 421723, 482695, 504640, 650368, 772312, 807424, 812960, 843446, 965390, 1009280, 1300736, 1544624, 1625920, 1686892, 1930780, 2018560, 2108615, 2601472, 3089248, 3251840, 3373784, 3861560, 4037120, 4217230, 6178496, 6503680, 6747568, 7723120, 8012737, 8434460, 12356992, 13007360, 13495136, 15446240, 16025474, 16868920, 24713984, 26990272, 30892480, 32050948, 33737840, 40063685, 49427968, 53980544, 61784960, 64101896, 67475680, 80127370, 107961088, 123569920, 128203792, 134951360, 160254740, 215922176, 247139840, 256407584, 269902720, 320509480, 512815168, 539805440, 641018960, 1025630336, 1079610880, 1282037920, 2051260672, 2564075840, 4102521344, 5128151680, 10256303360, 20512606720]

約数ペア:

[(1, 20512606720), (2, 10256303360), (4, 5128151680), (5, 4102521344), (8, 2564075840), (10, 2051260672), (16, 1282037920), (19, 1079610880), (20, 1025630336), (32, 641018960), (38, 539805440), (40, 512815168), (64, 320509480), (76, 269902720), (80, 256407584), (83, 247139840), (95, 215922176), (128, 160254740), (152, 134951360), (160, 128203792), (166, 123569920), (190, 107961088), (256, 80127370), (304, 67475680), (320, 64101896), (332, 61784960), (380, 53980544), (415, 49427968), (512, 40063685), (608, 33737840), (640, 32050948), (664, 30892480), (760, 26990272), (830, 24713984), (1216, 16868920), (1280, 16025474), (1328, 15446240), (1520, 13495136), (1577, 13007360), (1660, 12356992), (2432, 8434460), (2560, 8012737), (2656, 7723120), (3040, 6747568), (3154, 6503680), (3320, 6178496), (4864, 4217230), (5081, 4037120), (5312, 3861560), (6080, 3373784), (6308, 3251840), (6640, 3089248), (7885, 2601472), (9728, 2108615), (10162, 2018560), (10624, 1930780), (12160, 1686892), (12616, 1625920), (13280, 1544624), (15770, 1300736), (20324, 1009280), (21248, 965390), (24320, 843446), (25232, 812960), (25405, 807424), (26560, 772312), (31540, 650368), (40648, 504640), (42496, 482695), (48640, 421723), (50464, 406480), (50810, 403712), (53120, 386156), (63080, 325184), (81296, 252320), (96539, 212480), (100928, 203240), (101620, 201856), (106240, 193078), (126160, 162592)]