19508517

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1427}}^1$

素因数の和:1478

約数の個数: 36

約数和(自身を含む): 33860736

約数和(自身を除く): 14352219

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1427, 1519, 1953, 4281, 4557, 9989, 12843, 13671, 29967, 44237, 69923, 89901, 132711, 209769, 309659, 398133, 629307, 928977, 2167613, 2786931, 6502839, 19508517]

約数ペア:

[(1, 19508517), (3, 6502839), (7, 2786931), (9, 2167613), (21, 928977), (31, 629307), (49, 398133), (63, 309659), (93, 209769), (147, 132711), (217, 89901), (279, 69923), (441, 44237), (651, 29967), (1427, 13671), (1519, 12843), (1953, 9989), (4281, 4557)]