21754908

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{659}}^1$

素因数の和:807

約数の個数: 72

約数和(自身を含む): 63423360

約数和(自身を除く): 41668452

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 131, 252, 262, 393, 524, 659, 786, 917, 1179, 1318, 1572, 1834, 1977, 2358, 2636, 2751, 3668, 3954, 4613, 4716, 5502, 5931, 7908, 8253, 9226, 11004, 11862, 13839, 16506, 18452, 23724, 27678, 33012, 41517, 55356, 83034, 86329, 166068, 172658, 258987, 345316, 517974, 604303, 776961, 1035948, 1208606, 1553922, 1812909, 2417212, 3107844, 3625818, 5438727, 7251636, 10877454, 21754908]

約数ペア:

[(1, 21754908), (2, 10877454), (3, 7251636), (4, 5438727), (6, 3625818), (7, 3107844), (9, 2417212), (12, 1812909), (14, 1553922), (18, 1208606), (21, 1035948), (28, 776961), (36, 604303), (42, 517974), (63, 345316), (84, 258987), (126, 172658), (131, 166068), (252, 86329), (262, 83034), (393, 55356), (524, 41517), (659, 33012), (786, 27678), (917, 23724), (1179, 18452), (1318, 16506), (1572, 13839), (1834, 11862), (1977, 11004), (2358, 9226), (2636, 8253), (2751, 7908), (3668, 5931), (3954, 5502), (4613, 4716)]