55981980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{16369}}^1$

素因数の和:16403

約数の個数: 72

約数和(自身を含む): 178760400

約数和(自身を除く): 122778420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 16369, 32738, 49107, 65476, 81845, 98214, 147321, 163690, 196428, 245535, 294642, 311011, 327380, 491070, 589284, 622022, 736605, 933033, 982140, 1244044, 1473210, 1555055, 1866066, 2799099, 2946420, 3110110, 3732132, 4665165, 5598198, 6220220, 9330330, 11196396, 13995495, 18660660, 27990990, 55981980]

約数ペア:

[(1, 55981980), (2, 27990990), (3, 18660660), (4, 13995495), (5, 11196396), (6, 9330330), (9, 6220220), (10, 5598198), (12, 4665165), (15, 3732132), (18, 3110110), (19, 2946420), (20, 2799099), (30, 1866066), (36, 1555055), (38, 1473210), (45, 1244044), (57, 982140), (60, 933033), (76, 736605), (90, 622022), (95, 589284), (114, 491070), (171, 327380), (180, 311011), (190, 294642), (228, 245535), (285, 196428), (342, 163690), (380, 147321), (570, 98214), (684, 81845), (855, 65476), (1140, 49107), (1710, 32738), (3420, 16369)]