647019520

素因数分解:

$2^{10}\times 5^1\times 7^2\times {\mathrm{2579}}^1$

素因数の和:2618

約数の個数: 132

約数和(自身を含む): 1806190920

約数和(自身を除く): 1159171400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 512, 560, 640, 784, 896, 980, 1024, 1120, 1280, 1568, 1792, 1960, 2240, 2560, 2579, 3136, 3584, 3920, 4480, 5120, 5158, 6272, 7168, 7840, 8960, 10316, 12544, 12895, 15680, 17920, 18053, 20632, 25088, 25790, 31360, 35840, 36106, 41264, 50176, 51580, 62720, 72212, 82528, 90265, 103160, 125440, 126371, 144424, 165056, 180530, 206320, 250880, 252742, 288848, 330112, 361060, 412640, 505484, 577696, 631855, 660224, 722120, 825280, 1010968, 1155392, 1263710, 1320448, 1444240, 1650560, 2021936, 2310784, 2527420, 2640896, 2888480, 3301120, 4043872, 4621568, 5054840, 5776960, 6602240, 8087744, 9243136, 10109680, 11553920, 13204480, 16175488, 18486272, 20219360, 23107840, 32350976, 40438720, 46215680, 64701952, 80877440, 92431360, 129403904, 161754880, 323509760, 647019520]

約数ペア:

[(1, 647019520), (2, 323509760), (4, 161754880), (5, 129403904), (7, 92431360), (8, 80877440), (10, 64701952), (14, 46215680), (16, 40438720), (20, 32350976), (28, 23107840), (32, 20219360), (35, 18486272), (40, 16175488), (49, 13204480), (56, 11553920), (64, 10109680), (70, 9243136), (80, 8087744), (98, 6602240), (112, 5776960), (128, 5054840), (140, 4621568), (160, 4043872), (196, 3301120), (224, 2888480), (245, 2640896), (256, 2527420), (280, 2310784), (320, 2021936), (392, 1650560), (448, 1444240), (490, 1320448), (512, 1263710), (560, 1155392), (640, 1010968), (784, 825280), (896, 722120), (980, 660224), (1024, 631855), (1120, 577696), (1280, 505484), (1568, 412640), (1792, 361060), (1960, 330112), (2240, 288848), (2560, 252742), (2579, 250880), (3136, 206320), (3584, 180530), (3920, 165056), (4480, 144424), (5120, 126371), (5158, 125440), (6272, 103160), (7168, 90265), (7840, 82528), (8960, 72212), (10316, 62720), (12544, 51580), (12895, 50176), (15680, 41264), (17920, 36106), (18053, 35840), (20632, 31360), (25088, 25790)]