205945180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{557}}^1$

素因数の和:731

約数の個数: 96

約数和(自身を含む): 524966400

約数和(自身を除く): 319021220

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 139, 140, 190, 266, 278, 380, 532, 556, 557, 665, 695, 973, 1114, 1330, 1390, 1946, 2228, 2641, 2660, 2780, 2785, 3892, 3899, 4865, 5282, 5570, 7798, 9730, 10564, 10583, 11140, 13205, 15596, 18487, 19460, 19495, 21166, 26410, 36974, 38990, 42332, 52820, 52915, 73948, 74081, 77423, 77980, 92435, 105830, 148162, 154846, 184870, 211660, 296324, 309692, 369740, 370405, 387115, 541961, 740810, 774230, 1083922, 1471037, 1481620, 1548460, 2167844, 2709805, 2942074, 5419610, 5884148, 7355185, 10297259, 10839220, 14710370, 20594518, 29420740, 41189036, 51486295, 102972590, 205945180]

約数ペア:

[(1, 205945180), (2, 102972590), (4, 51486295), (5, 41189036), (7, 29420740), (10, 20594518), (14, 14710370), (19, 10839220), (20, 10297259), (28, 7355185), (35, 5884148), (38, 5419610), (70, 2942074), (76, 2709805), (95, 2167844), (133, 1548460), (139, 1481620), (140, 1471037), (190, 1083922), (266, 774230), (278, 740810), (380, 541961), (532, 387115), (556, 370405), (557, 369740), (665, 309692), (695, 296324), (973, 211660), (1114, 184870), (1330, 154846), (1390, 148162), (1946, 105830), (2228, 92435), (2641, 77980), (2660, 77423), (2780, 74081), (2785, 73948), (3892, 52915), (3899, 52820), (4865, 42332), (5282, 38990), (5570, 36974), (7798, 26410), (9730, 21166), (10564, 19495), (10583, 19460), (11140, 18487), (13205, 15596)]