21752690

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:866

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 19978510

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 199, 398, 643, 995, 1286, 1990, 3215, 3383, 6430, 6766, 10931, 16915, 21862, 33830, 54655, 109310, 127957, 255914, 639785, 1279570, 2175269, 4350538, 10876345, 21752690]

約数ペア:

[(1, 21752690), (2, 10876345), (5, 4350538), (10, 2175269), (17, 1279570), (34, 639785), (85, 255914), (170, 127957), (199, 109310), (398, 54655), (643, 33830), (995, 21862), (1286, 16915), (1990, 10931), (3215, 6766), (3383, 6430)]