21183136

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{3917}}^1$

素因数の和:3953

約数の個数: 36

約数和(自身を含む): 45170622

約数和(自身を除く): 23987486

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 338, 416, 676, 1352, 2704, 3917, 5408, 7834, 15668, 31336, 50921, 62672, 101842, 125344, 203684, 407368, 661973, 814736, 1323946, 1629472, 2647892, 5295784, 10591568, 21183136]

約数ペア:

[(1, 21183136), (2, 10591568), (4, 5295784), (8, 2647892), (13, 1629472), (16, 1323946), (26, 814736), (32, 661973), (52, 407368), (104, 203684), (169, 125344), (208, 101842), (338, 62672), (416, 50921), (676, 31336), (1352, 15668), (2704, 7834), (3917, 5408)]