1280440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 3499200

約数和(自身を除く): 2218760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 269, 280, 340, 476, 538, 595, 680, 952, 1076, 1190, 1345, 1883, 2152, 2380, 2690, 3766, 4573, 4760, 5380, 7532, 9146, 9415, 10760, 15064, 18292, 18830, 22865, 32011, 36584, 37660, 45730, 64022, 75320, 91460, 128044, 160055, 182920, 256088, 320110, 640220, 1280440]

約数ペア:

[(1, 1280440), (2, 640220), (4, 320110), (5, 256088), (7, 182920), (8, 160055), (10, 128044), (14, 91460), (17, 75320), (20, 64022), (28, 45730), (34, 37660), (35, 36584), (40, 32011), (56, 22865), (68, 18830), (70, 18292), (85, 15064), (119, 10760), (136, 9415), (140, 9146), (170, 7532), (238, 5380), (269, 4760), (280, 4573), (340, 3766), (476, 2690), (538, 2380), (595, 2152), (680, 1883), (952, 1345), (1076, 1190)]