81234220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1\times {\mathrm{617}}^1$

素因数の和:882

約数の個数: 48

約数和(自身を含む): 177539040

約数和(自身を除く): 96304820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 227, 290, 454, 580, 617, 908, 1135, 1234, 2270, 2468, 3085, 4540, 6170, 6583, 12340, 13166, 17893, 26332, 32915, 35786, 65830, 71572, 89465, 131660, 140059, 178930, 280118, 357860, 560236, 700295, 1400590, 2801180, 4061711, 8123422, 16246844, 20308555, 40617110, 81234220]

約数ペア:

[(1, 81234220), (2, 40617110), (4, 20308555), (5, 16246844), (10, 8123422), (20, 4061711), (29, 2801180), (58, 1400590), (116, 700295), (145, 560236), (227, 357860), (290, 280118), (454, 178930), (580, 140059), (617, 131660), (908, 89465), (1135, 71572), (1234, 65830), (2270, 35786), (2468, 32915), (3085, 26332), (4540, 17893), (6170, 13166), (6583, 12340)]