81904250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 165559680

約数和(自身を除く): 83655430

約数列:

[1, 2, 5, 10, 19, 25, 38, 43, 50, 86, 95, 125, 190, 215, 250, 401, 430, 475, 802, 817, 950, 1075, 1634, 2005, 2150, 2375, 4010, 4085, 4750, 5375, 7619, 8170, 10025, 10750, 15238, 17243, 20050, 20425, 34486, 38095, 40850, 50125, 76190, 86215, 100250, 102125, 172430, 190475, 204250, 327617, 380950, 431075, 655234, 862150, 952375, 1638085, 1904750, 2155375, 3276170, 4310750, 8190425, 16380850, 40952125, 81904250]

約数ペア:

[(1, 81904250), (2, 40952125), (5, 16380850), (10, 8190425), (19, 4310750), (25, 3276170), (38, 2155375), (43, 1904750), (50, 1638085), (86, 952375), (95, 862150), (125, 655234), (190, 431075), (215, 380950), (250, 327617), (401, 204250), (430, 190475), (475, 172430), (802, 102125), (817, 100250), (950, 86215), (1075, 76190), (1634, 50125), (2005, 40850), (2150, 38095), (2375, 34486), (4010, 20425), (4085, 20050), (4750, 17243), (5375, 15238), (7619, 10750), (8170, 10025)]