20520752

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3457}}^1$

素因数の和:3525

約数の個数: 40

約数和(自身を含む): 46309536

約数和(自身を除く): 25788784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 106, 112, 212, 371, 424, 742, 848, 1484, 2968, 3457, 5936, 6914, 13828, 24199, 27656, 48398, 55312, 96796, 183221, 193592, 366442, 387184, 732884, 1282547, 1465768, 2565094, 2931536, 5130188, 10260376, 20520752]

約数ペア:

[(1, 20520752), (2, 10260376), (4, 5130188), (7, 2931536), (8, 2565094), (14, 1465768), (16, 1282547), (28, 732884), (53, 387184), (56, 366442), (106, 193592), (112, 183221), (212, 96796), (371, 55312), (424, 48398), (742, 27656), (848, 24199), (1484, 13828), (2968, 6914), (3457, 5936)]