28259680

素因数分解:

$2^5\times 5^1\times {\mathrm{347}}^1\times {\mathrm{509}}^1$

素因数の和:871

約数の個数: 48

約数和(自身を含む): 67087440

約数和(自身を除く): 38827760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 347, 509, 694, 1018, 1388, 1735, 2036, 2545, 2776, 3470, 4072, 5090, 5552, 6940, 8144, 10180, 11104, 13880, 16288, 20360, 27760, 40720, 55520, 81440, 176623, 353246, 706492, 883115, 1412984, 1766230, 2825968, 3532460, 5651936, 7064920, 14129840, 28259680]

約数ペア:

[(1, 28259680), (2, 14129840), (4, 7064920), (5, 5651936), (8, 3532460), (10, 2825968), (16, 1766230), (20, 1412984), (32, 883115), (40, 706492), (80, 353246), (160, 176623), (347, 81440), (509, 55520), (694, 40720), (1018, 27760), (1388, 20360), (1735, 16288), (2036, 13880), (2545, 11104), (2776, 10180), (3470, 8144), (4072, 6940), (5090, 5552)]