199952500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^2\times {\mathrm{661}}^1$

素因数の和:707

約数の個数: 90

約数和(自身を含む): 481347482

約数和(自身を除く): 281394982

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 125, 220, 242, 250, 275, 484, 500, 550, 605, 625, 661, 1100, 1210, 1250, 1322, 1375, 2420, 2500, 2644, 2750, 3025, 3305, 5500, 6050, 6610, 6875, 7271, 12100, 13220, 13750, 14542, 15125, 16525, 27500, 29084, 30250, 33050, 36355, 60500, 66100, 72710, 75625, 79981, 82625, 145420, 151250, 159962, 165250, 181775, 302500, 319924, 330500, 363550, 399905, 413125, 727100, 799810, 826250, 908875, 1599620, 1652500, 1817750, 1999525, 3635500, 3999050, 4544375, 7998100, 9088750, 9997625, 18177500, 19995250, 39990500, 49988125, 99976250, 199952500]

約数ペア:

[(1, 199952500), (2, 99976250), (4, 49988125), (5, 39990500), (10, 19995250), (11, 18177500), (20, 9997625), (22, 9088750), (25, 7998100), (44, 4544375), (50, 3999050), (55, 3635500), (100, 1999525), (110, 1817750), (121, 1652500), (125, 1599620), (220, 908875), (242, 826250), (250, 799810), (275, 727100), (484, 413125), (500, 399905), (550, 363550), (605, 330500), (625, 319924), (661, 302500), (1100, 181775), (1210, 165250), (1250, 159962), (1322, 151250), (1375, 145420), (2420, 82625), (2500, 79981), (2644, 75625), (2750, 72710), (3025, 66100), (3305, 60500), (5500, 36355), (6050, 33050), (6610, 30250), (6875, 29084), (7271, 27500), (12100, 16525), (13220, 15125), (13750, 14542)]