201553900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2467}}^1$

素因数の和:2543

約数の個数: 72

約数和(自身を含む): 471289280

約数和(自身を除く): 269735380

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 380, 430, 475, 817, 860, 950, 1075, 1634, 1900, 2150, 2467, 3268, 4085, 4300, 4934, 8170, 9868, 12335, 16340, 20425, 24670, 40850, 46873, 49340, 61675, 81700, 93746, 106081, 123350, 187492, 212162, 234365, 246700, 424324, 468730, 530405, 937460, 1060810, 1171825, 2015539, 2121620, 2343650, 2652025, 4031078, 4687300, 5304050, 8062156, 10077695, 10608100, 20155390, 40310780, 50388475, 100776950, 201553900]

約数ペア:

[(1, 201553900), (2, 100776950), (4, 50388475), (5, 40310780), (10, 20155390), (19, 10608100), (20, 10077695), (25, 8062156), (38, 5304050), (43, 4687300), (50, 4031078), (76, 2652025), (86, 2343650), (95, 2121620), (100, 2015539), (172, 1171825), (190, 1060810), (215, 937460), (380, 530405), (430, 468730), (475, 424324), (817, 246700), (860, 234365), (950, 212162), (1075, 187492), (1634, 123350), (1900, 106081), (2150, 93746), (2467, 81700), (3268, 61675), (4085, 49340), (4300, 46873), (4934, 40850), (8170, 24670), (9868, 20425), (12335, 16340)]