20996957488

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{79}}^1\times {\mathrm{7561}}^1$

素因数の和:7687

約数の個数: 80

約数和(自身を含む): 44633948800

約数和(自身を除く): 23636991312

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 79, 104, 158, 169, 208, 316, 338, 632, 676, 1027, 1264, 1352, 2054, 2197, 2704, 4108, 4394, 7561, 8216, 8788, 13351, 15122, 16432, 17576, 26702, 30244, 35152, 53404, 60488, 98293, 106808, 120976, 173563, 196586, 213616, 347126, 393172, 597319, 694252, 786344, 1194638, 1277809, 1388504, 1572688, 2389276, 2555618, 2777008, 4778552, 5111236, 7765147, 9557104, 10222472, 15530294, 16611517, 20444944, 31060588, 33223034, 62121176, 66446068, 100946911, 124242352, 132892136, 201893822, 265784272, 403787644, 807575288, 1312309843, 1615150576, 2624619686, 5249239372, 10498478744, 20996957488]

約数ペア:

[(1, 20996957488), (2, 10498478744), (4, 5249239372), (8, 2624619686), (13, 1615150576), (16, 1312309843), (26, 807575288), (52, 403787644), (79, 265784272), (104, 201893822), (158, 132892136), (169, 124242352), (208, 100946911), (316, 66446068), (338, 62121176), (632, 33223034), (676, 31060588), (1027, 20444944), (1264, 16611517), (1352, 15530294), (2054, 10222472), (2197, 9557104), (2704, 7765147), (4108, 5111236), (4394, 4778552), (7561, 2777008), (8216, 2555618), (8788, 2389276), (13351, 1572688), (15122, 1388504), (16432, 1277809), (17576, 1194638), (26702, 786344), (30244, 694252), (35152, 597319), (53404, 393172), (60488, 347126), (98293, 213616), (106808, 196586), (120976, 173563)]