66438880

素因数分解:

$2^5\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1723}}^1$

素因数の和:1979

約数の個数: 48

約数和(自身を含む): 157704624

約数和(自身を除く): 91265744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 241, 482, 964, 1205, 1723, 1928, 2410, 3446, 3856, 4820, 6892, 7712, 8615, 9640, 13784, 17230, 19280, 27568, 34460, 38560, 55136, 68920, 137840, 275680, 415243, 830486, 1660972, 2076215, 3321944, 4152430, 6643888, 8304860, 13287776, 16609720, 33219440, 66438880]

約数ペア:

[(1, 66438880), (2, 33219440), (4, 16609720), (5, 13287776), (8, 8304860), (10, 6643888), (16, 4152430), (20, 3321944), (32, 2076215), (40, 1660972), (80, 830486), (160, 415243), (241, 275680), (482, 137840), (964, 68920), (1205, 55136), (1723, 38560), (1928, 34460), (2410, 27568), (3446, 19280), (3856, 17230), (4820, 13784), (6892, 9640), (7712, 8615)]