20745780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 68693184

約数和(自身を除く): 47947404

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 33, 34, 43, 44, 51, 55, 60, 66, 68, 85, 86, 102, 110, 129, 132, 165, 170, 172, 187, 204, 215, 220, 255, 258, 330, 340, 374, 430, 473, 510, 516, 561, 645, 660, 731, 748, 860, 935, 946, 1020, 1122, 1290, 1419, 1462, 1849, 1870, 1892, 2193, 2244, 2365, 2580, 2805, 2838, 2924, 3655, 3698, 3740, 4386, 4730, 5547, 5610, 5676, 7095, 7310, 7396, 8041, 8772, 9245, 9460, 10965, 11094, 11220, 14190, 14620, 16082, 18490, 20339, 21930, 22188, 24123, 27735, 28380, 31433, 32164, 36980, 40205, 40678, 43860, 48246, 55470, 61017, 62866, 80410, 81356, 94299, 96492, 101695, 110940, 120615, 122034, 125732, 157165, 160820, 188598, 203390, 241230, 244068, 305085, 314330, 345763, 377196, 406780, 471495, 482460, 610170, 628660, 691526, 942990, 1037289, 1220340, 1383052, 1728815, 1885980, 2074578, 3457630, 4149156, 5186445, 6915260, 10372890, 20745780]

約数ペア:

[(1, 20745780), (2, 10372890), (3, 6915260), (4, 5186445), (5, 4149156), (6, 3457630), (10, 2074578), (11, 1885980), (12, 1728815), (15, 1383052), (17, 1220340), (20, 1037289), (22, 942990), (30, 691526), (33, 628660), (34, 610170), (43, 482460), (44, 471495), (51, 406780), (55, 377196), (60, 345763), (66, 314330), (68, 305085), (85, 244068), (86, 241230), (102, 203390), (110, 188598), (129, 160820), (132, 157165), (165, 125732), (170, 122034), (172, 120615), (187, 110940), (204, 101695), (215, 96492), (220, 94299), (255, 81356), (258, 80410), (330, 62866), (340, 61017), (374, 55470), (430, 48246), (473, 43860), (510, 40678), (516, 40205), (561, 36980), (645, 32164), (660, 31433), (731, 28380), (748, 27735), (860, 24123), (935, 22188), (946, 21930), (1020, 20339), (1122, 18490), (1290, 16082), (1419, 14620), (1462, 14190), (1849, 11220), (1870, 11094), (1892, 10965), (2193, 9460), (2244, 9245), (2365, 8772), (2580, 8041), (2805, 7396), (2838, 7310), (2924, 7095), (3655, 5676), (3698, 5610), (3740, 5547), (4386, 4730)]