80211040

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:829

約数の個数: 144

約数和(自身を含む): 237695472

約数和(自身を除く): 157484432

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 364, 392, 416, 455, 490, 520, 560, 637, 728, 784, 787, 910, 980, 1040, 1120, 1274, 1456, 1568, 1574, 1820, 1960, 2080, 2548, 2912, 3148, 3185, 3640, 3920, 3935, 5096, 5509, 6296, 6370, 7280, 7840, 7870, 10192, 10231, 11018, 12592, 12740, 14560, 15740, 20384, 20462, 22036, 25184, 25480, 27545, 31480, 38563, 40924, 44072, 50960, 51155, 55090, 62960, 71617, 77126, 81848, 88144, 101920, 102310, 110180, 125920, 143234, 154252, 163696, 176288, 192815, 204620, 220360, 286468, 308504, 327392, 358085, 385630, 409240, 440720, 501319, 572936, 617008, 716170, 771260, 818480, 881440, 1002638, 1145872, 1234016, 1432340, 1542520, 1636960, 2005276, 2291744, 2506595, 2864680, 3085040, 4010552, 5013190, 5729360, 6170080, 8021104, 10026380, 11458720, 16042208, 20052760, 40105520, 80211040]

約数ペア:

[(1, 80211040), (2, 40105520), (4, 20052760), (5, 16042208), (7, 11458720), (8, 10026380), (10, 8021104), (13, 6170080), (14, 5729360), (16, 5013190), (20, 4010552), (26, 3085040), (28, 2864680), (32, 2506595), (35, 2291744), (40, 2005276), (49, 1636960), (52, 1542520), (56, 1432340), (65, 1234016), (70, 1145872), (80, 1002638), (91, 881440), (98, 818480), (104, 771260), (112, 716170), (130, 617008), (140, 572936), (160, 501319), (182, 440720), (196, 409240), (208, 385630), (224, 358085), (245, 327392), (260, 308504), (280, 286468), (364, 220360), (392, 204620), (416, 192815), (455, 176288), (490, 163696), (520, 154252), (560, 143234), (637, 125920), (728, 110180), (784, 102310), (787, 101920), (910, 88144), (980, 81848), (1040, 77126), (1120, 71617), (1274, 62960), (1456, 55090), (1568, 51155), (1574, 50960), (1820, 44072), (1960, 40924), (2080, 38563), (2548, 31480), (2912, 27545), (3148, 25480), (3185, 25184), (3640, 22036), (3920, 20462), (3935, 20384), (5096, 15740), (5509, 14560), (6296, 12740), (6370, 12592), (7280, 11018), (7840, 10231), (7870, 10192)]