81134720

素因数分解:

$2^7\times 5^1\times {\mathrm{331}}^1\times {\mathrm{383}}^1$

素因数の和:733

約数の個数: 64

約数和(自身を含む): 195056640

約数和(自身を除く): 113921920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 331, 383, 640, 662, 766, 1324, 1532, 1655, 1915, 2648, 3064, 3310, 3830, 5296, 6128, 6620, 7660, 10592, 12256, 13240, 15320, 21184, 24512, 26480, 30640, 42368, 49024, 52960, 61280, 105920, 122560, 126773, 211840, 245120, 253546, 507092, 633865, 1014184, 1267730, 2028368, 2535460, 4056736, 5070920, 8113472, 10141840, 16226944, 20283680, 40567360, 81134720]

約数ペア:

[(1, 81134720), (2, 40567360), (4, 20283680), (5, 16226944), (8, 10141840), (10, 8113472), (16, 5070920), (20, 4056736), (32, 2535460), (40, 2028368), (64, 1267730), (80, 1014184), (128, 633865), (160, 507092), (320, 253546), (331, 245120), (383, 211840), (640, 126773), (662, 122560), (766, 105920), (1324, 61280), (1532, 52960), (1655, 49024), (1915, 42368), (2648, 30640), (3064, 26480), (3310, 24512), (3830, 21184), (5296, 15320), (6128, 13240), (6620, 12256), (7660, 10592)]