161521250

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:741

約数の個数: 80

約数和(自身を含む): 350212896

約数和(自身を除く): 188691646

約数列:

[1, 2, 5, 10, 11, 17, 22, 25, 34, 50, 55, 85, 110, 125, 170, 187, 250, 275, 374, 425, 550, 625, 691, 850, 935, 1250, 1375, 1382, 1870, 2125, 2750, 3455, 4250, 4675, 6875, 6910, 7601, 9350, 10625, 11747, 13750, 15202, 17275, 21250, 23375, 23494, 34550, 38005, 46750, 58735, 76010, 86375, 116875, 117470, 129217, 172750, 190025, 233750, 258434, 293675, 380050, 431875, 587350, 646085, 863750, 950125, 1292170, 1468375, 1900250, 2936750, 3230425, 4750625, 6460850, 7341875, 9501250, 14683750, 16152125, 32304250, 80760625, 161521250]

約数ペア:

[(1, 161521250), (2, 80760625), (5, 32304250), (10, 16152125), (11, 14683750), (17, 9501250), (22, 7341875), (25, 6460850), (34, 4750625), (50, 3230425), (55, 2936750), (85, 1900250), (110, 1468375), (125, 1292170), (170, 950125), (187, 863750), (250, 646085), (275, 587350), (374, 431875), (425, 380050), (550, 293675), (625, 258434), (691, 233750), (850, 190025), (935, 172750), (1250, 129217), (1375, 117470), (1382, 116875), (1870, 86375), (2125, 76010), (2750, 58735), (3455, 46750), (4250, 38005), (4675, 34550), (6875, 23494), (6910, 23375), (7601, 21250), (9350, 17275), (10625, 15202), (11747, 13750)]