21325830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1061

約数の個数: 64

約数和(自身を含む): 55185408

約数和(自身を除く): 33859578

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 31, 46, 62, 69, 93, 115, 138, 155, 186, 230, 310, 345, 465, 690, 713, 930, 997, 1426, 1994, 2139, 2991, 3565, 4278, 4985, 5982, 7130, 9970, 10695, 14955, 21390, 22931, 29910, 30907, 45862, 61814, 68793, 92721, 114655, 137586, 154535, 185442, 229310, 309070, 343965, 463605, 687930, 710861, 927210, 1421722, 2132583, 3554305, 4265166, 7108610, 10662915, 21325830]

約数ペア:

[(1, 21325830), (2, 10662915), (3, 7108610), (5, 4265166), (6, 3554305), (10, 2132583), (15, 1421722), (23, 927210), (30, 710861), (31, 687930), (46, 463605), (62, 343965), (69, 309070), (93, 229310), (115, 185442), (138, 154535), (155, 137586), (186, 114655), (230, 92721), (310, 68793), (345, 61814), (465, 45862), (690, 30907), (713, 29910), (930, 22931), (997, 21390), (1426, 14955), (1994, 10695), (2139, 9970), (2991, 7130), (3565, 5982), (4278, 4985)]