720290745

素因数分解:

$3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1861}}^1$

素因数の和:1983

約数の個数: 64

約数和(自身を含む): 1329914880

約数和(自身を除く): 609624135

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 61, 135, 141, 183, 235, 305, 423, 549, 705, 915, 1269, 1647, 1861, 2115, 2745, 2867, 5583, 6345, 8235, 8601, 9305, 14335, 16749, 25803, 27915, 43005, 50247, 77409, 83745, 87467, 113521, 129015, 251235, 262401, 340563, 387045, 437335, 567605, 787203, 1021689, 1312005, 1702815, 2361609, 3065067, 3936015, 5108445, 5335487, 11808045, 15325335, 16006461, 26677435, 48019383, 80032305, 144058149, 240096915, 720290745]

約数ペア:

[(1, 720290745), (3, 240096915), (5, 144058149), (9, 80032305), (15, 48019383), (27, 26677435), (45, 16006461), (47, 15325335), (61, 11808045), (135, 5335487), (141, 5108445), (183, 3936015), (235, 3065067), (305, 2361609), (423, 1702815), (549, 1312005), (705, 1021689), (915, 787203), (1269, 567605), (1647, 437335), (1861, 387045), (2115, 340563), (2745, 262401), (2867, 251235), (5583, 129015), (6345, 113521), (8235, 87467), (8601, 83745), (9305, 77409), (14335, 50247), (16749, 43005), (25803, 27915)]