20775020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 56881440

約数和(自身を除く): 36106420

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 29, 34, 35, 43, 49, 58, 68, 70, 85, 86, 98, 116, 119, 140, 145, 170, 172, 196, 203, 215, 238, 245, 290, 301, 340, 406, 430, 476, 490, 493, 580, 595, 602, 731, 812, 833, 860, 980, 986, 1015, 1190, 1204, 1247, 1421, 1462, 1505, 1666, 1972, 2030, 2107, 2380, 2465, 2494, 2842, 2924, 3010, 3332, 3451, 3655, 4060, 4165, 4214, 4930, 4988, 5117, 5684, 6020, 6235, 6902, 7105, 7310, 8330, 8428, 8729, 9860, 10234, 10535, 12470, 13804, 14210, 14620, 16660, 17255, 17458, 20468, 21070, 21199, 24157, 24940, 25585, 28420, 34510, 34916, 35819, 42140, 42398, 43645, 48314, 51170, 61103, 69020, 71638, 84796, 87290, 96628, 102340, 105995, 120785, 122206, 143276, 148393, 174580, 179095, 211990, 241570, 244412, 296786, 305515, 358190, 423980, 483140, 593572, 611030, 716380, 741965, 1038751, 1222060, 1483930, 2077502, 2967860, 4155004, 5193755, 10387510, 20775020]

約数ペア:

[(1, 20775020), (2, 10387510), (4, 5193755), (5, 4155004), (7, 2967860), (10, 2077502), (14, 1483930), (17, 1222060), (20, 1038751), (28, 741965), (29, 716380), (34, 611030), (35, 593572), (43, 483140), (49, 423980), (58, 358190), (68, 305515), (70, 296786), (85, 244412), (86, 241570), (98, 211990), (116, 179095), (119, 174580), (140, 148393), (145, 143276), (170, 122206), (172, 120785), (196, 105995), (203, 102340), (215, 96628), (238, 87290), (245, 84796), (290, 71638), (301, 69020), (340, 61103), (406, 51170), (430, 48314), (476, 43645), (490, 42398), (493, 42140), (580, 35819), (595, 34916), (602, 34510), (731, 28420), (812, 25585), (833, 24940), (860, 24157), (980, 21199), (986, 21070), (1015, 20468), (1190, 17458), (1204, 17255), (1247, 16660), (1421, 14620), (1462, 14210), (1505, 13804), (1666, 12470), (1972, 10535), (2030, 10234), (2107, 9860), (2380, 8729), (2465, 8428), (2494, 8330), (2842, 7310), (2924, 7105), (3010, 6902), (3332, 6235), (3451, 6020), (3655, 5684), (4060, 5117), (4165, 4988), (4214, 4930)]