20356245

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1657}}^1$

素因数の和:1691

約数の個数: 64

約数和(自身を含む): 44567040

約数和(自身を除く): 24210795

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1657, 1755, 2457, 4095, 4971, 8285, 11599, 12285, 14913, 21541, 24855, 34797, 44739, 57995, 64623, 74565, 104391, 107705, 150787, 173985, 193869, 223695, 313173, 323115, 452361, 521955, 581607, 753935, 969345, 1357083, 1565865, 2261805, 2908035, 4071249, 6785415, 20356245]

約数ペア:

[(1, 20356245), (3, 6785415), (5, 4071249), (7, 2908035), (9, 2261805), (13, 1565865), (15, 1357083), (21, 969345), (27, 753935), (35, 581607), (39, 521955), (45, 452361), (63, 323115), (65, 313173), (91, 223695), (105, 193869), (117, 173985), (135, 150787), (189, 107705), (195, 104391), (273, 74565), (315, 64623), (351, 57995), (455, 44739), (585, 34797), (819, 24855), (945, 21541), (1365, 14913), (1657, 12285), (1755, 11599), (2457, 8285), (4095, 4971)]