21449968240

素因数分解:

$2^4\times 5^1\times {\mathrm{4517}}^1\times {\mathrm{59359}}^1$

素因数の和:63889

約数の個数: 40

約数和(自身を含む): 49883057280

約数和(自身を除く): 28433089040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4517, 9034, 18068, 22585, 36136, 45170, 59359, 72272, 90340, 118718, 180680, 237436, 296795, 361360, 474872, 593590, 949744, 1187180, 2374360, 4748720, 268124603, 536249206, 1072498412, 1340623015, 2144996824, 2681246030, 4289993648, 5362492060, 10724984120, 21449968240]

約数ペア:

[(1, 21449968240), (2, 10724984120), (4, 5362492060), (5, 4289993648), (8, 2681246030), (10, 2144996824), (16, 1340623015), (20, 1072498412), (40, 536249206), (80, 268124603), (4517, 4748720), (9034, 2374360), (18068, 1187180), (22585, 949744), (36136, 593590), (45170, 474872), (59359, 361360), (72272, 296795), (90340, 237436), (118718, 180680)]