18644955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 35997696

約数和(自身を除く): 17352741

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 61, 71, 105, 123, 183, 205, 213, 287, 305, 355, 427, 497, 615, 861, 915, 1065, 1281, 1435, 1491, 2135, 2485, 2501, 2911, 4305, 4331, 6405, 7455, 7503, 8733, 12505, 12993, 14555, 17507, 20377, 21655, 30317, 37515, 43665, 52521, 61131, 64965, 87535, 90951, 101885, 151585, 177571, 262605, 305655, 454755, 532713, 887855, 1242997, 2663565, 3728991, 6214985, 18644955]

約数ペア:

[(1, 18644955), (3, 6214985), (5, 3728991), (7, 2663565), (15, 1242997), (21, 887855), (35, 532713), (41, 454755), (61, 305655), (71, 262605), (105, 177571), (123, 151585), (183, 101885), (205, 90951), (213, 87535), (287, 64965), (305, 61131), (355, 52521), (427, 43665), (497, 37515), (615, 30317), (861, 21655), (915, 20377), (1065, 17507), (1281, 14555), (1435, 12993), (1491, 12505), (2135, 8733), (2485, 7503), (2501, 7455), (2911, 6405), (4305, 4331)]