179640820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:365

約数の個数: 72

約数和(自身を含む): 403250400

約数和(自身を除く): 223609580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 179, 190, 278, 358, 361, 380, 556, 695, 716, 722, 895, 1390, 1444, 1790, 1805, 2641, 2780, 3401, 3580, 3610, 5282, 6802, 7220, 10564, 13205, 13604, 17005, 24881, 26410, 34010, 49762, 50179, 52820, 64619, 68020, 99524, 100358, 124405, 129238, 200716, 248810, 250895, 258476, 323095, 472739, 497620, 501790, 646190, 945478, 1003580, 1292380, 1890956, 2363695, 4727390, 8982041, 9454780, 17964082, 35928164, 44910205, 89820410, 179640820]

約数ペア:

[(1, 179640820), (2, 89820410), (4, 44910205), (5, 35928164), (10, 17964082), (19, 9454780), (20, 8982041), (38, 4727390), (76, 2363695), (95, 1890956), (139, 1292380), (179, 1003580), (190, 945478), (278, 646190), (358, 501790), (361, 497620), (380, 472739), (556, 323095), (695, 258476), (716, 250895), (722, 248810), (895, 200716), (1390, 129238), (1444, 124405), (1790, 100358), (1805, 99524), (2641, 68020), (2780, 64619), (3401, 52820), (3580, 50179), (3610, 49762), (5282, 34010), (6802, 26410), (7220, 24881), (10564, 17005), (13205, 13604)]