21012670

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 96

約数和(自身を含む): 48345120

約数和(自身を除く): 27332450

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 37, 38, 49, 61, 70, 74, 95, 98, 122, 133, 185, 190, 245, 259, 266, 305, 370, 427, 490, 518, 610, 665, 703, 854, 931, 1159, 1295, 1330, 1406, 1813, 1862, 2135, 2257, 2318, 2590, 2989, 3515, 3626, 4270, 4514, 4655, 4921, 5795, 5978, 7030, 8113, 9065, 9310, 9842, 11285, 11590, 14945, 15799, 16226, 18130, 22570, 24605, 29890, 31598, 34447, 40565, 42883, 49210, 56791, 68894, 78995, 81130, 85766, 110593, 113582, 157990, 172235, 214415, 221186, 283955, 300181, 344470, 428830, 552965, 567910, 600362, 1105930, 1500905, 2101267, 3001810, 4202534, 10506335, 21012670]

約数ペア:

[(1, 21012670), (2, 10506335), (5, 4202534), (7, 3001810), (10, 2101267), (14, 1500905), (19, 1105930), (35, 600362), (37, 567910), (38, 552965), (49, 428830), (61, 344470), (70, 300181), (74, 283955), (95, 221186), (98, 214415), (122, 172235), (133, 157990), (185, 113582), (190, 110593), (245, 85766), (259, 81130), (266, 78995), (305, 68894), (370, 56791), (427, 49210), (490, 42883), (518, 40565), (610, 34447), (665, 31598), (703, 29890), (854, 24605), (931, 22570), (1159, 18130), (1295, 16226), (1330, 15799), (1406, 14945), (1813, 11590), (1862, 11285), (2135, 9842), (2257, 9310), (2318, 9065), (2590, 8113), (2989, 7030), (3515, 5978), (3626, 5795), (4270, 4921), (4514, 4655)]