128638840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{9431}}^1$

素因数の和:9484

約数の個数: 64

約数和(自身を含む): 325969920

約数和(自身を除く): 197331080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2728, 3410, 6820, 9431, 13640, 18862, 37724, 47155, 75448, 94310, 103741, 188620, 207482, 292361, 377240, 414964, 518705, 584722, 829928, 1037410, 1169444, 1461805, 2074820, 2338888, 2923610, 3215971, 4149640, 5847220, 6431942, 11694440, 12863884, 16079855, 25727768, 32159710, 64319420, 128638840]

約数ペア:

[(1, 128638840), (2, 64319420), (4, 32159710), (5, 25727768), (8, 16079855), (10, 12863884), (11, 11694440), (20, 6431942), (22, 5847220), (31, 4149640), (40, 3215971), (44, 2923610), (55, 2338888), (62, 2074820), (88, 1461805), (110, 1169444), (124, 1037410), (155, 829928), (220, 584722), (248, 518705), (310, 414964), (341, 377240), (440, 292361), (620, 207482), (682, 188620), (1240, 103741), (1364, 94310), (1705, 75448), (2728, 47155), (3410, 37724), (6820, 18862), (9431, 13640)]