4001280

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{521}}^1$

素因数の和:547

約数の個数: 80

約数和(自身を含む): 12816144

約数和(自身を除く): 8814864

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 521, 640, 768, 960, 1042, 1280, 1536, 1563, 1920, 2084, 2560, 2605, 3126, 3840, 4168, 5210, 6252, 7680, 7815, 8336, 10420, 12504, 15630, 16672, 20840, 25008, 31260, 33344, 41680, 50016, 62520, 66688, 83360, 100032, 125040, 133376, 166720, 200064, 250080, 266752, 333440, 400128, 500160, 666880, 800256, 1000320, 1333760, 2000640, 4001280]

約数ペア:

[(1, 4001280), (2, 2000640), (3, 1333760), (4, 1000320), (5, 800256), (6, 666880), (8, 500160), (10, 400128), (12, 333440), (15, 266752), (16, 250080), (20, 200064), (24, 166720), (30, 133376), (32, 125040), (40, 100032), (48, 83360), (60, 66688), (64, 62520), (80, 50016), (96, 41680), (120, 33344), (128, 31260), (160, 25008), (192, 20840), (240, 16672), (256, 15630), (320, 12504), (384, 10420), (480, 8336), (512, 7815), (521, 7680), (640, 6252), (768, 5210), (960, 4168), (1042, 3840), (1280, 3126), (1536, 2605), (1563, 2560), (1920, 2084)]