1333760

素因数分解:

$2^9\times 5^1\times {\mathrm{521}}^1$

素因数の和:544

約数の個数: 40

約数和(自身を含む): 3204036

約数和(自身を除く): 1870276

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 521, 640, 1042, 1280, 2084, 2560, 2605, 4168, 5210, 8336, 10420, 16672, 20840, 33344, 41680, 66688, 83360, 133376, 166720, 266752, 333440, 666880, 1333760]

約数ペア:

[(1, 1333760), (2, 666880), (4, 333440), (5, 266752), (8, 166720), (10, 133376), (16, 83360), (20, 66688), (32, 41680), (40, 33344), (64, 20840), (80, 16672), (128, 10420), (160, 8336), (256, 5210), (320, 4168), (512, 2605), (521, 2560), (640, 2084), (1042, 1280)]