68005980

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{1999}}^1$

素因数の和:2030

約数の個数: 144

約数和(自身を含む): 244608000

約数和(自身を除く): 176602020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 243, 252, 270, 315, 324, 378, 405, 420, 486, 540, 567, 630, 756, 810, 945, 972, 1134, 1215, 1260, 1620, 1701, 1890, 1999, 2268, 2430, 2835, 3402, 3780, 3998, 4860, 5670, 5997, 6804, 7996, 8505, 9995, 11340, 11994, 13993, 17010, 17991, 19990, 23988, 27986, 29985, 34020, 35982, 39980, 41979, 53973, 55972, 59970, 69965, 71964, 83958, 89955, 107946, 119940, 125937, 139930, 161919, 167916, 179910, 209895, 215892, 251874, 269865, 279860, 323838, 359820, 377811, 419790, 485757, 503748, 539730, 629685, 647676, 755622, 809595, 839580, 971514, 1079460, 1133433, 1259370, 1511244, 1619190, 1889055, 1943028, 2266866, 2428785, 2518740, 3238380, 3400299, 3778110, 4533732, 4857570, 5667165, 6800598, 7556220, 9715140, 11334330, 13601196, 17001495, 22668660, 34002990, 68005980]

約数ペア:

[(1, 68005980), (2, 34002990), (3, 22668660), (4, 17001495), (5, 13601196), (6, 11334330), (7, 9715140), (9, 7556220), (10, 6800598), (12, 5667165), (14, 4857570), (15, 4533732), (18, 3778110), (20, 3400299), (21, 3238380), (27, 2518740), (28, 2428785), (30, 2266866), (35, 1943028), (36, 1889055), (42, 1619190), (45, 1511244), (54, 1259370), (60, 1133433), (63, 1079460), (70, 971514), (81, 839580), (84, 809595), (90, 755622), (105, 647676), (108, 629685), (126, 539730), (135, 503748), (140, 485757), (162, 419790), (180, 377811), (189, 359820), (210, 323838), (243, 279860), (252, 269865), (270, 251874), (315, 215892), (324, 209895), (378, 179910), (405, 167916), (420, 161919), (486, 139930), (540, 125937), (567, 119940), (630, 107946), (756, 89955), (810, 83958), (945, 71964), (972, 69965), (1134, 59970), (1215, 55972), (1260, 53973), (1620, 41979), (1701, 39980), (1890, 35982), (1999, 34020), (2268, 29985), (2430, 27986), (2835, 23988), (3402, 19990), (3780, 17991), (3998, 17010), (4860, 13993), (5670, 11994), (5997, 11340), (6804, 9995), (7996, 8505)]