20402030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{193}}^1$

素因数の和:273

約数の個数: 48

約数和(自身を含む): 41610672

約数和(自身を除く): 21208642

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 155, 193, 310, 341, 386, 682, 961, 965, 1705, 1922, 1930, 2123, 3410, 4246, 4805, 5983, 9610, 10571, 10615, 11966, 21142, 21230, 29915, 52855, 59830, 65813, 105710, 131626, 185473, 329065, 370946, 658130, 927365, 1854730, 2040203, 4080406, 10201015, 20402030]

約数ペア:

[(1, 20402030), (2, 10201015), (5, 4080406), (10, 2040203), (11, 1854730), (22, 927365), (31, 658130), (55, 370946), (62, 329065), (110, 185473), (155, 131626), (193, 105710), (310, 65813), (341, 59830), (386, 52855), (682, 29915), (961, 21230), (965, 21142), (1705, 11966), (1922, 10615), (1930, 10571), (2123, 9610), (3410, 5983), (4246, 4805)]