18889750400

素因数分解:

$2^7\times 5^2\times {\mathrm{1999}}^1\times {\mathrm{2953}}^1$

素因数の和:4976

約数の個数: 96

約数和(自身を含む): 46702740000

約数和(自身を除く): 27812989600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 1999, 2953, 3200, 3998, 5906, 7996, 9995, 11812, 14765, 15992, 19990, 23624, 29530, 31984, 39980, 47248, 49975, 59060, 63968, 73825, 79960, 94496, 99950, 118120, 127936, 147650, 159920, 188992, 199900, 236240, 255872, 295300, 319840, 377984, 399800, 472480, 590600, 639680, 799600, 944960, 1181200, 1279360, 1599200, 1889920, 2362400, 3198400, 4724800, 5903047, 6396800, 9449600, 11806094, 23612188, 29515235, 47224376, 59030470, 94448752, 118060940, 147576175, 188897504, 236121880, 295152350, 377795008, 472243760, 590304700, 755590016, 944487520, 1180609400, 1888975040, 2361218800, 3777950080, 4722437600, 9444875200, 18889750400]

約数ペア:

[(1, 18889750400), (2, 9444875200), (4, 4722437600), (5, 3777950080), (8, 2361218800), (10, 1888975040), (16, 1180609400), (20, 944487520), (25, 755590016), (32, 590304700), (40, 472243760), (50, 377795008), (64, 295152350), (80, 236121880), (100, 188897504), (128, 147576175), (160, 118060940), (200, 94448752), (320, 59030470), (400, 47224376), (640, 29515235), (800, 23612188), (1600, 11806094), (1999, 9449600), (2953, 6396800), (3200, 5903047), (3998, 4724800), (5906, 3198400), (7996, 2362400), (9995, 1889920), (11812, 1599200), (14765, 1279360), (15992, 1181200), (19990, 944960), (23624, 799600), (29530, 639680), (31984, 590600), (39980, 472480), (47248, 399800), (49975, 377984), (59060, 319840), (63968, 295300), (73825, 255872), (79960, 236240), (94496, 199900), (99950, 188992), (118120, 159920), (127936, 147650)]