21802788

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{241}}^1\times {\mathrm{359}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 63423360

約数和(自身を除く): 41620572

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 241, 252, 359, 482, 718, 723, 964, 1077, 1436, 1446, 1687, 2154, 2169, 2513, 2892, 3231, 3374, 4308, 4338, 5026, 5061, 6462, 6748, 7539, 8676, 10052, 10122, 12924, 15078, 15183, 20244, 22617, 30156, 30366, 45234, 60732, 86519, 90468, 173038, 259557, 346076, 519114, 605633, 778671, 1038228, 1211266, 1557342, 1816899, 2422532, 3114684, 3633798, 5450697, 7267596, 10901394, 21802788]

約数ペア:

[(1, 21802788), (2, 10901394), (3, 7267596), (4, 5450697), (6, 3633798), (7, 3114684), (9, 2422532), (12, 1816899), (14, 1557342), (18, 1211266), (21, 1038228), (28, 778671), (36, 605633), (42, 519114), (63, 346076), (84, 259557), (126, 173038), (241, 90468), (252, 86519), (359, 60732), (482, 45234), (718, 30366), (723, 30156), (964, 22617), (1077, 20244), (1436, 15183), (1446, 15078), (1687, 12924), (2154, 10122), (2169, 10052), (2513, 8676), (2892, 7539), (3231, 6748), (3374, 6462), (4308, 5061), (4338, 5026)]