21055980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:607

約数の個数: 96

約数和(自身を含む): 65495808

約数和(自身を除く): 44439828

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 61, 66, 110, 122, 132, 165, 183, 220, 244, 305, 330, 366, 523, 610, 660, 671, 732, 915, 1046, 1220, 1342, 1569, 1830, 2013, 2092, 2615, 2684, 3138, 3355, 3660, 4026, 5230, 5753, 6276, 6710, 7845, 8052, 10065, 10460, 11506, 13420, 15690, 17259, 20130, 23012, 28765, 31380, 31903, 34518, 40260, 57530, 63806, 69036, 86295, 95709, 115060, 127612, 159515, 172590, 191418, 319030, 345180, 350933, 382836, 478545, 638060, 701866, 957090, 1052799, 1403732, 1754665, 1914180, 2105598, 3509330, 4211196, 5263995, 7018660, 10527990, 21055980]

約数ペア:

[(1, 21055980), (2, 10527990), (3, 7018660), (4, 5263995), (5, 4211196), (6, 3509330), (10, 2105598), (11, 1914180), (12, 1754665), (15, 1403732), (20, 1052799), (22, 957090), (30, 701866), (33, 638060), (44, 478545), (55, 382836), (60, 350933), (61, 345180), (66, 319030), (110, 191418), (122, 172590), (132, 159515), (165, 127612), (183, 115060), (220, 95709), (244, 86295), (305, 69036), (330, 63806), (366, 57530), (523, 40260), (610, 34518), (660, 31903), (671, 31380), (732, 28765), (915, 23012), (1046, 20130), (1220, 17259), (1342, 15690), (1569, 13420), (1830, 11506), (2013, 10460), (2092, 10065), (2615, 8052), (2684, 7845), (3138, 6710), (3355, 6276), (3660, 5753), (4026, 5230)]