20171157580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{857}}^1\times {\mathrm{1889}}^1$

素因数の和:2851

約数の個数: 96

約数和(自身を含む): 49037788800

約数和(自身を除く): 28866631220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 857, 890, 1246, 1714, 1780, 1889, 2492, 3115, 3428, 3778, 4285, 5999, 6230, 7556, 8570, 9445, 11998, 12460, 13223, 17140, 18890, 23996, 26446, 29995, 37780, 52892, 59990, 66115, 76273, 119980, 132230, 152546, 168121, 264460, 305092, 336242, 381365, 533911, 672484, 762730, 840605, 1067822, 1176847, 1525460, 1618873, 1681210, 2135644, 2353694, 2669555, 3237746, 3362420, 4707388, 5339110, 5884235, 6475492, 8094365, 10678220, 11332111, 11768470, 16188730, 22664222, 23536940, 32377460, 45328444, 56660555, 113321110, 144079697, 226642220, 288159394, 576318788, 720398485, 1008557879, 1440796970, 2017115758, 2881593940, 4034231516, 5042789395, 10085578790, 20171157580]

約数ペア:

[(1, 20171157580), (2, 10085578790), (4, 5042789395), (5, 4034231516), (7, 2881593940), (10, 2017115758), (14, 1440796970), (20, 1008557879), (28, 720398485), (35, 576318788), (70, 288159394), (89, 226642220), (140, 144079697), (178, 113321110), (356, 56660555), (445, 45328444), (623, 32377460), (857, 23536940), (890, 22664222), (1246, 16188730), (1714, 11768470), (1780, 11332111), (1889, 10678220), (2492, 8094365), (3115, 6475492), (3428, 5884235), (3778, 5339110), (4285, 4707388), (5999, 3362420), (6230, 3237746), (7556, 2669555), (8570, 2353694), (9445, 2135644), (11998, 1681210), (12460, 1618873), (13223, 1525460), (17140, 1176847), (18890, 1067822), (23996, 840605), (26446, 762730), (29995, 672484), (37780, 533911), (52892, 381365), (59990, 336242), (66115, 305092), (76273, 264460), (119980, 168121), (132230, 152546)]