209807500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:681

約数の個数: 120

約数和(自身を含む): 552823040

約数和(自身を除く): 343015540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 125, 133, 140, 175, 190, 250, 266, 350, 380, 475, 500, 532, 625, 631, 665, 700, 875, 950, 1250, 1262, 1330, 1750, 1900, 2375, 2500, 2524, 2660, 3155, 3325, 3500, 4375, 4417, 4750, 6310, 6650, 8750, 8834, 9500, 11875, 11989, 12620, 13300, 15775, 16625, 17500, 17668, 22085, 23750, 23978, 31550, 33250, 44170, 47500, 47956, 59945, 63100, 66500, 78875, 83125, 83923, 88340, 110425, 119890, 157750, 166250, 167846, 220850, 239780, 299725, 315500, 332500, 335692, 394375, 419615, 441700, 552125, 599450, 788750, 839230, 1104250, 1198900, 1498625, 1577500, 1678460, 2098075, 2208500, 2760625, 2997250, 4196150, 5521250, 5994500, 7493125, 8392300, 10490375, 11042500, 14986250, 20980750, 29972500, 41961500, 52451875, 104903750, 209807500]

約数ペア:

[(1, 209807500), (2, 104903750), (4, 52451875), (5, 41961500), (7, 29972500), (10, 20980750), (14, 14986250), (19, 11042500), (20, 10490375), (25, 8392300), (28, 7493125), (35, 5994500), (38, 5521250), (50, 4196150), (70, 2997250), (76, 2760625), (95, 2208500), (100, 2098075), (125, 1678460), (133, 1577500), (140, 1498625), (175, 1198900), (190, 1104250), (250, 839230), (266, 788750), (350, 599450), (380, 552125), (475, 441700), (500, 419615), (532, 394375), (625, 335692), (631, 332500), (665, 315500), (700, 299725), (875, 239780), (950, 220850), (1250, 167846), (1262, 166250), (1330, 157750), (1750, 119890), (1900, 110425), (2375, 88340), (2500, 83923), (2524, 83125), (2660, 78875), (3155, 66500), (3325, 63100), (3500, 59945), (4375, 47956), (4417, 47500), (4750, 44170), (6310, 33250), (6650, 31550), (8750, 23978), (8834, 23750), (9500, 22085), (11875, 17668), (11989, 17500), (12620, 16625), (13300, 15775)]