20107236875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2609}}^1$

素因数の和:2718

約数の個数: 80

約数和(自身を含む): 29353104000

約数和(自身を除く): 9245867125

約数列:

[1, 5, 11, 19, 25, 55, 59, 95, 125, 209, 275, 295, 475, 625, 649, 1045, 1121, 1375, 1475, 2375, 2609, 3245, 5225, 5605, 6875, 7375, 11875, 12331, 13045, 16225, 26125, 28025, 28699, 36875, 49571, 61655, 65225, 81125, 130625, 140125, 143495, 153931, 247855, 308275, 326125, 405625, 545281, 700625, 717475, 769655, 1239275, 1541375, 1630625, 1693241, 2726405, 2924689, 3587375, 3848275, 6196375, 7706875, 8466205, 13632025, 14623445, 17936875, 19241375, 30981875, 32171579, 42331025, 68160125, 73117225, 96206875, 160857895, 211655125, 340800625, 365586125, 804289475, 1058275625, 1827930625, 4021447375, 20107236875]

約数ペア:

[(1, 20107236875), (5, 4021447375), (11, 1827930625), (19, 1058275625), (25, 804289475), (55, 365586125), (59, 340800625), (95, 211655125), (125, 160857895), (209, 96206875), (275, 73117225), (295, 68160125), (475, 42331025), (625, 32171579), (649, 30981875), (1045, 19241375), (1121, 17936875), (1375, 14623445), (1475, 13632025), (2375, 8466205), (2609, 7706875), (3245, 6196375), (5225, 3848275), (5605, 3587375), (6875, 2924689), (7375, 2726405), (11875, 1693241), (12331, 1630625), (13045, 1541375), (16225, 1239275), (26125, 769655), (28025, 717475), (28699, 700625), (36875, 545281), (49571, 405625), (61655, 326125), (65225, 308275), (81125, 247855), (130625, 153931), (140125, 143495)]