21429616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{383}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 23567504

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 269, 383, 538, 766, 1076, 1532, 2152, 3064, 3497, 4304, 4979, 6128, 6994, 9958, 13988, 19916, 27976, 39832, 55952, 79664, 103027, 206054, 412108, 824216, 1339351, 1648432, 2678702, 5357404, 10714808, 21429616]

約数ペア:

[(1, 21429616), (2, 10714808), (4, 5357404), (8, 2678702), (13, 1648432), (16, 1339351), (26, 824216), (52, 412108), (104, 206054), (208, 103027), (269, 79664), (383, 55952), (538, 39832), (766, 27976), (1076, 19916), (1532, 13988), (2152, 9958), (3064, 6994), (3497, 6128), (4304, 4979)]