21076280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{739}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 51148800

約数和(自身を除く): 30072520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 155, 184, 230, 248, 310, 460, 620, 713, 739, 920, 1240, 1426, 1478, 2852, 2956, 3565, 3695, 5704, 5912, 7130, 7390, 14260, 14780, 16997, 22909, 28520, 29560, 33994, 45818, 67988, 84985, 91636, 114545, 135976, 169970, 183272, 229090, 339940, 458180, 526907, 679880, 916360, 1053814, 2107628, 2634535, 4215256, 5269070, 10538140, 21076280]

約数ペア:

[(1, 21076280), (2, 10538140), (4, 5269070), (5, 4215256), (8, 2634535), (10, 2107628), (20, 1053814), (23, 916360), (31, 679880), (40, 526907), (46, 458180), (62, 339940), (92, 229090), (115, 183272), (124, 169970), (155, 135976), (184, 114545), (230, 91636), (248, 84985), (310, 67988), (460, 45818), (620, 33994), (713, 29560), (739, 28520), (920, 22909), (1240, 16997), (1426, 14780), (1478, 14260), (2852, 7390), (2956, 7130), (3565, 5912), (3695, 5704)]