128899980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65101}}^1$

素因数の和:65127

約数の個数: 72

約数和(自身を含む): 426548304

約数和(自身を除く): 297648324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 65101, 130202, 195303, 260404, 325505, 390606, 585909, 651010, 716111, 781212, 976515, 1171818, 1302020, 1432222, 1953030, 2148333, 2343636, 2864444, 2929545, 3580555, 3906060, 4296666, 5859090, 6444999, 7161110, 8593332, 10741665, 11718180, 12889998, 14322220, 21483330, 25779996, 32224995, 42966660, 64449990, 128899980]

約数ペア:

[(1, 128899980), (2, 64449990), (3, 42966660), (4, 32224995), (5, 25779996), (6, 21483330), (9, 14322220), (10, 12889998), (11, 11718180), (12, 10741665), (15, 8593332), (18, 7161110), (20, 6444999), (22, 5859090), (30, 4296666), (33, 3906060), (36, 3580555), (44, 2929545), (45, 2864444), (55, 2343636), (60, 2148333), (66, 1953030), (90, 1432222), (99, 1302020), (110, 1171818), (132, 976515), (165, 781212), (180, 716111), (198, 651010), (220, 585909), (330, 390606), (396, 325505), (495, 260404), (660, 195303), (990, 130202), (1980, 65101)]