18185750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 39424320

約数和(自身を除く): 21238570

約数列:

[1, 2, 5, 10, 11, 17, 22, 25, 34, 50, 55, 85, 110, 125, 170, 187, 250, 275, 374, 389, 425, 550, 778, 850, 935, 1375, 1870, 1945, 2125, 2750, 3890, 4250, 4279, 4675, 6613, 8558, 9350, 9725, 13226, 19450, 21395, 23375, 33065, 42790, 46750, 48625, 66130, 72743, 97250, 106975, 145486, 165325, 213950, 330650, 363715, 534875, 727430, 826625, 1069750, 1653250, 1818575, 3637150, 9092875, 18185750]

約数ペア:

[(1, 18185750), (2, 9092875), (5, 3637150), (10, 1818575), (11, 1653250), (17, 1069750), (22, 826625), (25, 727430), (34, 534875), (50, 363715), (55, 330650), (85, 213950), (110, 165325), (125, 145486), (170, 106975), (187, 97250), (250, 72743), (275, 66130), (374, 48625), (389, 46750), (425, 42790), (550, 33065), (778, 23375), (850, 21395), (935, 19450), (1375, 13226), (1870, 9725), (1945, 9350), (2125, 8558), (2750, 6613), (3890, 4675), (4250, 4279)]