199957900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:272

約数の個数: 108

約数和(自身を含む): 476219520

約数和(自身を除く): 276261620

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 29, 38, 50, 58, 76, 95, 100, 116, 145, 190, 191, 290, 361, 380, 382, 475, 551, 580, 722, 725, 764, 950, 955, 1102, 1444, 1450, 1805, 1900, 1910, 2204, 2755, 2900, 3610, 3629, 3820, 4775, 5510, 5539, 7220, 7258, 9025, 9550, 10469, 11020, 11078, 13775, 14516, 18050, 18145, 19100, 20938, 22156, 27550, 27695, 36100, 36290, 41876, 52345, 55100, 55390, 68951, 72580, 90725, 104690, 105241, 110780, 137902, 138475, 181450, 209380, 210482, 261725, 275804, 276950, 344755, 362900, 420964, 523450, 526205, 553900, 689510, 1046900, 1052410, 1379020, 1723775, 1999579, 2104820, 2631025, 3447550, 3999158, 5262050, 6895100, 7998316, 9997895, 10524100, 19995790, 39991580, 49989475, 99978950, 199957900]

約数ペア:

[(1, 199957900), (2, 99978950), (4, 49989475), (5, 39991580), (10, 19995790), (19, 10524100), (20, 9997895), (25, 7998316), (29, 6895100), (38, 5262050), (50, 3999158), (58, 3447550), (76, 2631025), (95, 2104820), (100, 1999579), (116, 1723775), (145, 1379020), (190, 1052410), (191, 1046900), (290, 689510), (361, 553900), (380, 526205), (382, 523450), (475, 420964), (551, 362900), (580, 344755), (722, 276950), (725, 275804), (764, 261725), (950, 210482), (955, 209380), (1102, 181450), (1444, 138475), (1450, 137902), (1805, 110780), (1900, 105241), (1910, 104690), (2204, 90725), (2755, 72580), (2900, 68951), (3610, 55390), (3629, 55100), (3820, 52345), (4775, 41876), (5510, 36290), (5539, 36100), (7220, 27695), (7258, 27550), (9025, 22156), (9550, 20938), (10469, 19100), (11020, 18145), (11078, 18050), (13775, 14516)]