20131489100

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:708

約数の個数: 144

約数和(自身を含む): 45846440640

約数和(自身を除く): 25714951540

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 71, 74, 100, 142, 148, 185, 197, 284, 355, 370, 389, 394, 710, 740, 778, 788, 925, 985, 1420, 1556, 1775, 1850, 1945, 1970, 2627, 3550, 3700, 3890, 3940, 4925, 5254, 7100, 7289, 7780, 9725, 9850, 10508, 13135, 13987, 14393, 14578, 19450, 19700, 26270, 27619, 27974, 28786, 29156, 36445, 38900, 52540, 55238, 55948, 57572, 65675, 69935, 71965, 72890, 76633, 110476, 131350, 138095, 139870, 143930, 145780, 153266, 182225, 262700, 276190, 279740, 287860, 306532, 349675, 359825, 364450, 383165, 517519, 552380, 690475, 699350, 719650, 728900, 766330, 1021903, 1035038, 1380950, 1398700, 1439300, 1532660, 1915825, 2043806, 2070076, 2587595, 2761900, 2835421, 3831650, 4087612, 5109515, 5175190, 5440943, 5670842, 7663300, 10219030, 10350380, 10881886, 11341684, 12937975, 14177105, 20438060, 21763772, 25547575, 25875950, 27204715, 28354210, 51095150, 51751900, 54409430, 56708420, 70885525, 102190300, 108818860, 136023575, 141771050, 201314891, 272047150, 283542100, 402629782, 544094300, 805259564, 1006574455, 2013148910, 4026297820, 5032872275, 10065744550, 20131489100]

約数ペア:

[(1, 20131489100), (2, 10065744550), (4, 5032872275), (5, 4026297820), (10, 2013148910), (20, 1006574455), (25, 805259564), (37, 544094300), (50, 402629782), (71, 283542100), (74, 272047150), (100, 201314891), (142, 141771050), (148, 136023575), (185, 108818860), (197, 102190300), (284, 70885525), (355, 56708420), (370, 54409430), (389, 51751900), (394, 51095150), (710, 28354210), (740, 27204715), (778, 25875950), (788, 25547575), (925, 21763772), (985, 20438060), (1420, 14177105), (1556, 12937975), (1775, 11341684), (1850, 10881886), (1945, 10350380), (1970, 10219030), (2627, 7663300), (3550, 5670842), (3700, 5440943), (3890, 5175190), (3940, 5109515), (4925, 4087612), (5254, 3831650), (7100, 2835421), (7289, 2761900), (7780, 2587595), (9725, 2070076), (9850, 2043806), (10508, 1915825), (13135, 1532660), (13987, 1439300), (14393, 1398700), (14578, 1380950), (19450, 1035038), (19700, 1021903), (26270, 766330), (27619, 728900), (27974, 719650), (28786, 699350), (29156, 690475), (36445, 552380), (38900, 517519), (52540, 383165), (55238, 364450), (55948, 359825), (57572, 349675), (65675, 306532), (69935, 287860), (71965, 279740), (72890, 276190), (76633, 262700), (110476, 182225), (131350, 153266), (138095, 145780), (139870, 143930)]