401536640

素因数分解:

$2^7\times 5^1\times {\mathrm{727}}^1\times {\mathrm{863}}^1$

素因数の和:1609

約数の個数: 64

約数和(自身を含む): 962357760

約数和(自身を除く): 560821120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 727, 863, 1454, 1726, 2908, 3452, 3635, 4315, 5816, 6904, 7270, 8630, 11632, 13808, 14540, 17260, 23264, 27616, 29080, 34520, 46528, 55232, 58160, 69040, 93056, 110464, 116320, 138080, 232640, 276160, 465280, 552320, 627401, 1254802, 2509604, 3137005, 5019208, 6274010, 10038416, 12548020, 20076832, 25096040, 40153664, 50192080, 80307328, 100384160, 200768320, 401536640]

約数ペア:

[(1, 401536640), (2, 200768320), (4, 100384160), (5, 80307328), (8, 50192080), (10, 40153664), (16, 25096040), (20, 20076832), (32, 12548020), (40, 10038416), (64, 6274010), (80, 5019208), (128, 3137005), (160, 2509604), (320, 1254802), (640, 627401), (727, 552320), (863, 465280), (1454, 276160), (1726, 232640), (2908, 138080), (3452, 116320), (3635, 110464), (4315, 93056), (5816, 69040), (6904, 58160), (7270, 55232), (8630, 46528), (11632, 34520), (13808, 29080), (14540, 27616), (17260, 23264)]