20517536

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:134

約数の個数: 96

約数和(自身を含む): 47190528

約数和(自身を除く): 26672992

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 37, 43, 52, 62, 74, 86, 104, 124, 148, 172, 208, 248, 296, 344, 403, 416, 481, 496, 559, 592, 688, 806, 962, 992, 1118, 1147, 1184, 1333, 1376, 1591, 1612, 1924, 2236, 2294, 2666, 3182, 3224, 3848, 4472, 4588, 5332, 6364, 6448, 7696, 8944, 9176, 10664, 12728, 12896, 14911, 15392, 17329, 17888, 18352, 20683, 21328, 25456, 29822, 34658, 36704, 41366, 42656, 49321, 50912, 59644, 69316, 82732, 98642, 119288, 138632, 165464, 197284, 238576, 277264, 330928, 394568, 477152, 554528, 641173, 661856, 789136, 1282346, 1578272, 2564692, 5129384, 10258768, 20517536]

約数ペア:

[(1, 20517536), (2, 10258768), (4, 5129384), (8, 2564692), (13, 1578272), (16, 1282346), (26, 789136), (31, 661856), (32, 641173), (37, 554528), (43, 477152), (52, 394568), (62, 330928), (74, 277264), (86, 238576), (104, 197284), (124, 165464), (148, 138632), (172, 119288), (208, 98642), (248, 82732), (296, 69316), (344, 59644), (403, 50912), (416, 49321), (481, 42656), (496, 41366), (559, 36704), (592, 34658), (688, 29822), (806, 25456), (962, 21328), (992, 20683), (1118, 18352), (1147, 17888), (1184, 17329), (1333, 15392), (1376, 14911), (1591, 12896), (1612, 12728), (1924, 10664), (2236, 9176), (2294, 8944), (2666, 7696), (3182, 6448), (3224, 6364), (3848, 5332), (4472, 4588)]