1981503018

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{421}}^1\times {\mathrm{2161}}^1$

素因数の和:2612

約数の個数: 72

約数和(自身を含む): 4732432068

約数和(自身を除く): 2750929050

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 121, 198, 242, 363, 421, 726, 842, 1089, 1263, 2161, 2178, 2526, 3789, 4322, 4631, 6483, 7578, 9262, 12966, 13893, 19449, 23771, 27786, 38898, 41679, 47542, 50941, 71313, 83358, 101882, 142626, 152823, 213939, 261481, 305646, 427878, 458469, 522962, 784443, 909781, 916938, 1568886, 1819562, 2353329, 2729343, 4706658, 5458686, 8188029, 10007591, 16376058, 20015182, 30022773, 60045546, 90068319, 110083501, 180136638, 220167002, 330250503, 660501006, 990751509, 1981503018]

約数ペア:

[(1, 1981503018), (2, 990751509), (3, 660501006), (6, 330250503), (9, 220167002), (11, 180136638), (18, 110083501), (22, 90068319), (33, 60045546), (66, 30022773), (99, 20015182), (121, 16376058), (198, 10007591), (242, 8188029), (363, 5458686), (421, 4706658), (726, 2729343), (842, 2353329), (1089, 1819562), (1263, 1568886), (2161, 916938), (2178, 909781), (2526, 784443), (3789, 522962), (4322, 458469), (4631, 427878), (6483, 305646), (7578, 261481), (9262, 213939), (12966, 152823), (13893, 142626), (19449, 101882), (23771, 83358), (27786, 71313), (38898, 50941), (41679, 47542)]