19871460

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{751}}^1$

素因数の和:783

約数の個数: 144

約数和(自身を含む): 72011520

約数和(自身を除く): 52140060

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, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 751, 756, 882, 945, 980, 1260, 1323, 1470, 1502, 1764, 1890, 2205, 2253, 2646, 2940, 3004, 3755, 3780, 4410, 4506, 5257, 5292, 6615, 6759, 7510, 8820, 9012, 10514, 11265, 13230, 13518, 15020, 15771, 20277, 21028, 22530, 26285, 26460, 27036, 31542, 33795, 36799, 40554, 45060, 47313, 52570, 63084, 67590, 73598, 78855, 81108, 94626, 101385, 105140, 110397, 135180, 141939, 147196, 157710, 183995, 189252, 202770, 220794, 236565, 283878, 315420, 331191, 367990, 405540, 441588, 473130, 551985, 567756, 662382, 709695, 735980, 946260, 993573, 1103970, 1324764, 1419390, 1655955, 1987146, 2207940, 2838780, 3311910, 3974292, 4967865, 6623820, 9935730, 19871460]

約数ペア:

[(1, 19871460), (2, 9935730), (3, 6623820), (4, 4967865), (5, 3974292), (6, 3311910), (7, 2838780), (9, 2207940), (10, 1987146), (12, 1655955), (14, 1419390), (15, 1324764), (18, 1103970), (20, 993573), (21, 946260), (27, 735980), (28, 709695), (30, 662382), (35, 567756), (36, 551985), (42, 473130), (45, 441588), (49, 405540), (54, 367990), (60, 331191), (63, 315420), (70, 283878), (84, 236565), (90, 220794), (98, 202770), (105, 189252), (108, 183995), (126, 157710), (135, 147196), (140, 141939), (147, 135180), (180, 110397), (189, 105140), (196, 101385), (210, 94626), (245, 81108), (252, 78855), (270, 73598), (294, 67590), (315, 63084), (378, 52570), (420, 47313), (441, 45060), (490, 40554), (540, 36799), (588, 33795), (630, 31542), (735, 27036), (751, 26460), (756, 26285), (882, 22530), (945, 21028), (980, 20277), (1260, 15771), (1323, 15020), (1470, 13518), (1502, 13230), (1764, 11265), (1890, 10514), (2205, 9012), (2253, 8820), (2646, 7510), (2940, 6759), (3004, 6615), (3755, 5292), (3780, 5257), (4410, 4506)]