51991220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^3\times {\mathrm{379}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 115550400

約数和(自身を除く): 63559180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 379, 380, 722, 758, 1444, 1516, 1805, 1895, 3610, 3790, 6859, 7201, 7220, 7580, 13718, 14402, 27436, 28804, 34295, 36005, 68590, 72010, 136819, 137180, 144020, 273638, 547276, 684095, 1368190, 2599561, 2736380, 5199122, 10398244, 12997805, 25995610, 51991220]

約数ペア:

[(1, 51991220), (2, 25995610), (4, 12997805), (5, 10398244), (10, 5199122), (19, 2736380), (20, 2599561), (38, 1368190), (76, 684095), (95, 547276), (190, 273638), (361, 144020), (379, 137180), (380, 136819), (722, 72010), (758, 68590), (1444, 36005), (1516, 34295), (1805, 28804), (1895, 27436), (3610, 14402), (3790, 13718), (6859, 7580), (7201, 7220)]