21808098

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 72

約数和(自身を含む): 52414128

約数和(自身を除く): 30606030

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 67, 78, 107, 117, 134, 169, 201, 214, 234, 321, 338, 402, 507, 603, 642, 871, 963, 1014, 1206, 1391, 1521, 1742, 1926, 2613, 2782, 3042, 4173, 5226, 7169, 7839, 8346, 11323, 12519, 14338, 15678, 18083, 21507, 22646, 25038, 33969, 36166, 43014, 54249, 64521, 67938, 93197, 101907, 108498, 129042, 162747, 186394, 203814, 279591, 325494, 559182, 838773, 1211561, 1677546, 2423122, 3634683, 7269366, 10904049, 21808098]

約数ペア:

[(1, 21808098), (2, 10904049), (3, 7269366), (6, 3634683), (9, 2423122), (13, 1677546), (18, 1211561), (26, 838773), (39, 559182), (67, 325494), (78, 279591), (107, 203814), (117, 186394), (134, 162747), (169, 129042), (201, 108498), (214, 101907), (234, 93197), (321, 67938), (338, 64521), (402, 54249), (507, 43014), (603, 36166), (642, 33969), (871, 25038), (963, 22646), (1014, 21507), (1206, 18083), (1391, 15678), (1521, 14338), (1742, 12519), (1926, 11323), (2613, 8346), (2782, 7839), (3042, 7169), (4173, 5226)]