123438250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2048

約数の個数: 64

約数和(自身を含む): 262080000

約数和(自身を除く): 138641750

約数列:

[1, 2, 5, 10, 13, 19, 25, 26, 38, 50, 65, 95, 125, 130, 190, 247, 250, 325, 475, 494, 650, 950, 1235, 1625, 1999, 2375, 2470, 3250, 3998, 4750, 6175, 9995, 12350, 19990, 25987, 30875, 37981, 49975, 51974, 61750, 75962, 99950, 129935, 189905, 249875, 259870, 379810, 493753, 499750, 649675, 949525, 987506, 1299350, 1899050, 2468765, 3248375, 4747625, 4937530, 6496750, 9495250, 12343825, 24687650, 61719125, 123438250]

約数ペア:

[(1, 123438250), (2, 61719125), (5, 24687650), (10, 12343825), (13, 9495250), (19, 6496750), (25, 4937530), (26, 4747625), (38, 3248375), (50, 2468765), (65, 1899050), (95, 1299350), (125, 987506), (130, 949525), (190, 649675), (247, 499750), (250, 493753), (325, 379810), (475, 259870), (494, 249875), (650, 189905), (950, 129935), (1235, 99950), (1625, 75962), (1999, 61750), (2375, 51974), (2470, 49975), (3250, 37981), (3998, 30875), (4750, 25987), (6175, 19990), (9995, 12350)]