19938555

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{541}}^1$

素因数の和:578

約数の個数: 80

約数和(自身を含む): 44071104

約数和(自身を除く): 24132549

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 81, 91, 105, 117, 135, 189, 195, 273, 315, 351, 405, 455, 541, 567, 585, 819, 945, 1053, 1365, 1623, 1755, 2457, 2705, 2835, 3787, 4095, 4869, 5265, 7033, 7371, 8115, 11361, 12285, 14607, 18935, 21099, 24345, 34083, 35165, 36855, 43821, 49231, 56805, 63297, 73035, 102249, 105495, 147693, 170415, 189891, 219105, 246155, 306747, 316485, 443079, 511245, 569673, 738465, 949455, 1329237, 1533735, 2215395, 2848365, 3987711, 6646185, 19938555]

約数ペア:

[(1, 19938555), (3, 6646185), (5, 3987711), (7, 2848365), (9, 2215395), (13, 1533735), (15, 1329237), (21, 949455), (27, 738465), (35, 569673), (39, 511245), (45, 443079), (63, 316485), (65, 306747), (81, 246155), (91, 219105), (105, 189891), (117, 170415), (135, 147693), (189, 105495), (195, 102249), (273, 73035), (315, 63297), (351, 56805), (405, 49231), (455, 43821), (541, 36855), (567, 35165), (585, 34083), (819, 24345), (945, 21099), (1053, 18935), (1365, 14607), (1623, 12285), (1755, 11361), (2457, 8115), (2705, 7371), (2835, 7033), (3787, 5265), (4095, 4869)]