81644860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:307

約数の個数: 96

約数和(自身を含む): 197406720

約数和(自身を除く): 115761860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 67, 110, 116, 134, 145, 191, 220, 268, 290, 319, 335, 382, 580, 638, 670, 737, 764, 955, 1276, 1340, 1474, 1595, 1910, 1943, 2101, 2948, 3190, 3685, 3820, 3886, 4202, 5539, 6380, 7370, 7772, 8404, 9715, 10505, 11078, 12797, 14740, 19430, 21010, 21373, 22156, 25594, 27695, 38860, 42020, 42746, 51188, 55390, 60929, 63985, 85492, 106865, 110780, 121858, 127970, 140767, 213730, 243716, 255940, 281534, 304645, 371113, 427460, 563068, 609290, 703835, 742226, 1218580, 1407670, 1484452, 1855565, 2815340, 3711130, 4082243, 7422260, 8164486, 16328972, 20411215, 40822430, 81644860]

約数ペア:

[(1, 81644860), (2, 40822430), (4, 20411215), (5, 16328972), (10, 8164486), (11, 7422260), (20, 4082243), (22, 3711130), (29, 2815340), (44, 1855565), (55, 1484452), (58, 1407670), (67, 1218580), (110, 742226), (116, 703835), (134, 609290), (145, 563068), (191, 427460), (220, 371113), (268, 304645), (290, 281534), (319, 255940), (335, 243716), (382, 213730), (580, 140767), (638, 127970), (670, 121858), (737, 110780), (764, 106865), (955, 85492), (1276, 63985), (1340, 60929), (1474, 55390), (1595, 51188), (1910, 42746), (1943, 42020), (2101, 38860), (2948, 27695), (3190, 25594), (3685, 22156), (3820, 21373), (3886, 21010), (4202, 19430), (5539, 14740), (6380, 12797), (7370, 11078), (7772, 10505), (8404, 9715)]