21200491000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{12841}}^1$

素因数の和:13002

約数の個数: 128

約数和(自身を含む): 53850101760

約数和(自身を除く): 32649610760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 127, 130, 200, 250, 254, 260, 325, 500, 508, 520, 635, 650, 1000, 1016, 1270, 1300, 1625, 1651, 2540, 2600, 3175, 3250, 3302, 5080, 6350, 6500, 6604, 8255, 12700, 12841, 13000, 13208, 15875, 16510, 25400, 25682, 31750, 33020, 41275, 51364, 63500, 64205, 66040, 82550, 102728, 127000, 128410, 165100, 166933, 206375, 256820, 321025, 330200, 333866, 412750, 513640, 642050, 667732, 825500, 834665, 1284100, 1335464, 1605125, 1630807, 1651000, 1669330, 2568200, 3210250, 3261614, 3338660, 4173325, 6420500, 6523228, 6677320, 8154035, 8346650, 12841000, 13046456, 16308070, 16693300, 20866625, 21200491, 32616140, 33386600, 40770175, 41733250, 42400982, 65232280, 81540350, 83466500, 84801964, 106002455, 163080700, 166933000, 169603928, 203850875, 212004910, 326161400, 407701750, 424009820, 530012275, 815403500, 848019640, 1060024550, 1630807000, 2120049100, 2650061375, 4240098200, 5300122750, 10600245500, 21200491000]

約数ペア:

[(1, 21200491000), (2, 10600245500), (4, 5300122750), (5, 4240098200), (8, 2650061375), (10, 2120049100), (13, 1630807000), (20, 1060024550), (25, 848019640), (26, 815403500), (40, 530012275), (50, 424009820), (52, 407701750), (65, 326161400), (100, 212004910), (104, 203850875), (125, 169603928), (127, 166933000), (130, 163080700), (200, 106002455), (250, 84801964), (254, 83466500), (260, 81540350), (325, 65232280), (500, 42400982), (508, 41733250), (520, 40770175), (635, 33386600), (650, 32616140), (1000, 21200491), (1016, 20866625), (1270, 16693300), (1300, 16308070), (1625, 13046456), (1651, 12841000), (2540, 8346650), (2600, 8154035), (3175, 6677320), (3250, 6523228), (3302, 6420500), (5080, 4173325), (6350, 3338660), (6500, 3261614), (6604, 3210250), (8255, 2568200), (12700, 1669330), (12841, 1651000), (13000, 1630807), (13208, 1605125), (15875, 1335464), (16510, 1284100), (25400, 834665), (25682, 825500), (31750, 667732), (33020, 642050), (41275, 513640), (51364, 412750), (63500, 333866), (64205, 330200), (66040, 321025), (82550, 256820), (102728, 206375), (127000, 166933), (128410, 165100)]