18904920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{613}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 57028320

約数和(自身を除く): 38123400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 257, 514, 613, 771, 1028, 1226, 1285, 1542, 1839, 2056, 2452, 2570, 3065, 3084, 3678, 3855, 4904, 5140, 6130, 6168, 7356, 7710, 9195, 10280, 12260, 14712, 15420, 18390, 24520, 30840, 36780, 73560, 157541, 315082, 472623, 630164, 787705, 945246, 1260328, 1575410, 1890492, 2363115, 3150820, 3780984, 4726230, 6301640, 9452460, 18904920]

約数ペア:

[(1, 18904920), (2, 9452460), (3, 6301640), (4, 4726230), (5, 3780984), (6, 3150820), (8, 2363115), (10, 1890492), (12, 1575410), (15, 1260328), (20, 945246), (24, 787705), (30, 630164), (40, 472623), (60, 315082), (120, 157541), (257, 73560), (514, 36780), (613, 30840), (771, 24520), (1028, 18390), (1226, 15420), (1285, 14712), (1542, 12260), (1839, 10280), (2056, 9195), (2452, 7710), (2570, 7356), (3065, 6168), (3084, 6130), (3678, 5140), (3855, 4904)]