21536487

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16203033

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 89, 161, 167, 207, 267, 483, 501, 623, 801, 1169, 1449, 1503, 1869, 2047, 3507, 3841, 5607, 6141, 10521, 11523, 14329, 14863, 18423, 26887, 34569, 42987, 44589, 80661, 104041, 128961, 133767, 241983, 312123, 341849, 936369, 1025547, 2392943, 3076641, 7178829, 21536487]

約数ペア:

[(1, 21536487), (3, 7178829), (7, 3076641), (9, 2392943), (21, 1025547), (23, 936369), (63, 341849), (69, 312123), (89, 241983), (161, 133767), (167, 128961), (207, 104041), (267, 80661), (483, 44589), (501, 42987), (623, 34569), (801, 26887), (1169, 18423), (1449, 14863), (1503, 14329), (1869, 11523), (2047, 10521), (3507, 6141), (3841, 5607)]