28959980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1019}}^1$

素因数の和:1071

約数の個数: 72

約数和(自身を含む): 73256400

約数和(自身を除く): 44296420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 490, 580, 812, 980, 1015, 1019, 1421, 2030, 2038, 2842, 4060, 4076, 5095, 5684, 7105, 7133, 10190, 14210, 14266, 20380, 28420, 28532, 29551, 35665, 49931, 59102, 71330, 99862, 118204, 142660, 147755, 199724, 206857, 249655, 295510, 413714, 499310, 591020, 827428, 998620, 1034285, 1447999, 2068570, 2895998, 4137140, 5791996, 7239995, 14479990, 28959980]

約数ペア:

[(1, 28959980), (2, 14479990), (4, 7239995), (5, 5791996), (7, 4137140), (10, 2895998), (14, 2068570), (20, 1447999), (28, 1034285), (29, 998620), (35, 827428), (49, 591020), (58, 499310), (70, 413714), (98, 295510), (116, 249655), (140, 206857), (145, 199724), (196, 147755), (203, 142660), (245, 118204), (290, 99862), (406, 71330), (490, 59102), (580, 49931), (812, 35665), (980, 29551), (1015, 28532), (1019, 28420), (1421, 20380), (2030, 14266), (2038, 14210), (2842, 10190), (4060, 7133), (4076, 7105), (5095, 5684)]