19900472

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1117}}^1$

素因数の和:1271

約数の個数: 32

約数和(自身を含む): 39845520

約数和(自身を除く): 19945048

約数列:

[1, 2, 4, 8, 17, 34, 68, 131, 136, 262, 524, 1048, 1117, 2227, 2234, 4454, 4468, 8908, 8936, 17816, 18989, 37978, 75956, 146327, 151912, 292654, 585308, 1170616, 2487559, 4975118, 9950236, 19900472]

約数ペア:

[(1, 19900472), (2, 9950236), (4, 4975118), (8, 2487559), (17, 1170616), (34, 585308), (68, 292654), (131, 151912), (136, 146327), (262, 75956), (524, 37978), (1048, 18989), (1117, 17816), (2227, 8936), (2234, 8908), (4454, 4468)]