20161908

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{643}}^1$

素因数の和:733

約数の個数: 72

約数和(自身を含む): 55791008

約数和(自身を除く): 35629100

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 67, 78, 117, 134, 156, 201, 234, 268, 402, 468, 603, 643, 804, 871, 1206, 1286, 1742, 1929, 2412, 2572, 2613, 3484, 3858, 5226, 5787, 7716, 7839, 8359, 10452, 11574, 15678, 16718, 23148, 25077, 31356, 33436, 43081, 50154, 75231, 86162, 100308, 129243, 150462, 172324, 258486, 300924, 387729, 516972, 560053, 775458, 1120106, 1550916, 1680159, 2240212, 3360318, 5040477, 6720636, 10080954, 20161908]

約数ペア:

[(1, 20161908), (2, 10080954), (3, 6720636), (4, 5040477), (6, 3360318), (9, 2240212), (12, 1680159), (13, 1550916), (18, 1120106), (26, 775458), (36, 560053), (39, 516972), (52, 387729), (67, 300924), (78, 258486), (117, 172324), (134, 150462), (156, 129243), (201, 100308), (234, 86162), (268, 75231), (402, 50154), (468, 43081), (603, 33436), (643, 31356), (804, 25077), (871, 23148), (1206, 16718), (1286, 15678), (1742, 11574), (1929, 10452), (2412, 8359), (2572, 7839), (2613, 7716), (3484, 5787), (3858, 5226)]