21173120

素因数分解:

$2^7\times 5^1\times {\mathrm{33083}}^1$

素因数の和:33102

約数の個数: 32

約数和(自身を含む): 50618520

約数和(自身を除く): 29445400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33083, 66166, 132332, 165415, 264664, 330830, 529328, 661660, 1058656, 1323320, 2117312, 2646640, 4234624, 5293280, 10586560, 21173120]

約数ペア:

[(1, 21173120), (2, 10586560), (4, 5293280), (5, 4234624), (8, 2646640), (10, 2117312), (16, 1323320), (20, 1058656), (32, 661660), (40, 529328), (64, 330830), (80, 264664), (128, 165415), (160, 132332), (320, 66166), (640, 33083)]