20127909280

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1283}}^1\times {\mathrm{1381}}^1$

素因数の和:2750

約数の個数: 96

約数和(自身を含む): 48294465408

約数和(自身を除く): 28166556128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1283, 1381, 1420, 2272, 2566, 2762, 2840, 5132, 5524, 5680, 6415, 6905, 10264, 11048, 11360, 12830, 13810, 20528, 22096, 25660, 27620, 41056, 44192, 51320, 55240, 91093, 98051, 102640, 110480, 182186, 196102, 205280, 220960, 364372, 392204, 455465, 490255, 728744, 784408, 910930, 980510, 1457488, 1568816, 1771823, 1821860, 1961020, 2914976, 3137632, 3543646, 3643720, 3922040, 7087292, 7287440, 7844080, 8859115, 14174584, 14574880, 15688160, 17718230, 28349168, 35436460, 56698336, 70872920, 125799433, 141745840, 251598866, 283491680, 503197732, 628997165, 1006395464, 1257994330, 2012790928, 2515988660, 4025581856, 5031977320, 10063954640, 20127909280]

約数ペア:

[(1, 20127909280), (2, 10063954640), (4, 5031977320), (5, 4025581856), (8, 2515988660), (10, 2012790928), (16, 1257994330), (20, 1006395464), (32, 628997165), (40, 503197732), (71, 283491680), (80, 251598866), (142, 141745840), (160, 125799433), (284, 70872920), (355, 56698336), (568, 35436460), (710, 28349168), (1136, 17718230), (1283, 15688160), (1381, 14574880), (1420, 14174584), (2272, 8859115), (2566, 7844080), (2762, 7287440), (2840, 7087292), (5132, 3922040), (5524, 3643720), (5680, 3543646), (6415, 3137632), (6905, 2914976), (10264, 1961020), (11048, 1821860), (11360, 1771823), (12830, 1568816), (13810, 1457488), (20528, 980510), (22096, 910930), (25660, 784408), (27620, 728744), (41056, 490255), (44192, 455465), (51320, 392204), (55240, 364372), (91093, 220960), (98051, 205280), (102640, 196102), (110480, 182186)]