21537256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 46443600

約数和(自身を除く): 24906344

約数列:

[1, 2, 4, 8, 13, 26, 29, 37, 52, 58, 74, 104, 116, 148, 193, 232, 296, 377, 386, 481, 754, 772, 962, 1073, 1508, 1544, 1924, 2146, 2509, 3016, 3848, 4292, 5018, 5597, 7141, 8584, 10036, 11194, 13949, 14282, 20072, 22388, 27898, 28564, 44776, 55796, 57128, 72761, 92833, 111592, 145522, 185666, 207089, 291044, 371332, 414178, 582088, 742664, 828356, 1656712, 2692157, 5384314, 10768628, 21537256]

約数ペア:

[(1, 21537256), (2, 10768628), (4, 5384314), (8, 2692157), (13, 1656712), (26, 828356), (29, 742664), (37, 582088), (52, 414178), (58, 371332), (74, 291044), (104, 207089), (116, 185666), (148, 145522), (193, 111592), (232, 92833), (296, 72761), (377, 57128), (386, 55796), (481, 44776), (754, 28564), (772, 27898), (962, 22388), (1073, 20072), (1508, 14282), (1544, 13949), (1924, 11194), (2146, 10036), (2509, 8584), (3016, 7141), (3848, 5597), (4292, 5018)]