644940940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{1823}}^1$

素因数の和:1884

約数の個数: 108

約数和(自身を含む): 1663695936

約数和(自身を除く): 1018754996

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 361, 380, 490, 532, 665, 722, 931, 980, 1330, 1444, 1805, 1823, 1862, 2527, 2660, 3610, 3646, 3724, 4655, 5054, 7220, 7292, 9115, 9310, 10108, 12635, 12761, 17689, 18230, 18620, 25270, 25522, 34637, 35378, 36460, 50540, 51044, 63805, 69274, 70756, 88445, 89327, 127610, 138548, 173185, 176890, 178654, 242459, 255220, 346370, 353780, 357308, 446635, 484918, 658103, 692740, 893270, 969836, 1212295, 1316206, 1697213, 1786540, 2424590, 2632412, 3290515, 3394426, 4606721, 4849180, 6581030, 6788852, 8486065, 9213442, 13162060, 16972130, 18426884, 23033605, 32247047, 33944260, 46067210, 64494094, 92134420, 128988188, 161235235, 322470470, 644940940]

約数ペア:

[(1, 644940940), (2, 322470470), (4, 161235235), (5, 128988188), (7, 92134420), (10, 64494094), (14, 46067210), (19, 33944260), (20, 32247047), (28, 23033605), (35, 18426884), (38, 16972130), (49, 13162060), (70, 9213442), (76, 8486065), (95, 6788852), (98, 6581030), (133, 4849180), (140, 4606721), (190, 3394426), (196, 3290515), (245, 2632412), (266, 2424590), (361, 1786540), (380, 1697213), (490, 1316206), (532, 1212295), (665, 969836), (722, 893270), (931, 692740), (980, 658103), (1330, 484918), (1444, 446635), (1805, 357308), (1823, 353780), (1862, 346370), (2527, 255220), (2660, 242459), (3610, 178654), (3646, 176890), (3724, 173185), (4655, 138548), (5054, 127610), (7220, 89327), (7292, 88445), (9115, 70756), (9310, 69274), (10108, 63805), (12635, 51044), (12761, 50540), (17689, 36460), (18230, 35378), (18620, 34637), (25270, 25522)]