20550400

素因数分解:

$2^8\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:71

約数の個数: 162

約数和(自身を含む): 57978060

約数和(自身を除く): 37427660

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 32, 38, 40, 50, 52, 64, 65, 76, 80, 95, 100, 104, 128, 130, 152, 160, 169, 190, 200, 208, 247, 256, 260, 304, 320, 325, 338, 380, 400, 416, 475, 494, 520, 608, 640, 650, 676, 760, 800, 832, 845, 950, 988, 1040, 1216, 1235, 1280, 1300, 1352, 1520, 1600, 1664, 1690, 1900, 1976, 2080, 2432, 2470, 2600, 2704, 3040, 3200, 3211, 3328, 3380, 3800, 3952, 4160, 4225, 4864, 4940, 5200, 5408, 6080, 6175, 6400, 6422, 6760, 7600, 7904, 8320, 8450, 9880, 10400, 10816, 12160, 12350, 12844, 13520, 15200, 15808, 16055, 16640, 16900, 19760, 20800, 21632, 24320, 24700, 25688, 27040, 30400, 31616, 32110, 33800, 39520, 41600, 43264, 49400, 51376, 54080, 60800, 63232, 64220, 67600, 79040, 80275, 83200, 98800, 102752, 108160, 121600, 128440, 135200, 158080, 160550, 197600, 205504, 216320, 256880, 270400, 316160, 321100, 395200, 411008, 513760, 540800, 642200, 790400, 822016, 1027520, 1081600, 1284400, 1580800, 2055040, 2568800, 4110080, 5137600, 10275200, 20550400]

約数ペア:

[(1, 20550400), (2, 10275200), (4, 5137600), (5, 4110080), (8, 2568800), (10, 2055040), (13, 1580800), (16, 1284400), (19, 1081600), (20, 1027520), (25, 822016), (26, 790400), (32, 642200), (38, 540800), (40, 513760), (50, 411008), (52, 395200), (64, 321100), (65, 316160), (76, 270400), (80, 256880), (95, 216320), (100, 205504), (104, 197600), (128, 160550), (130, 158080), (152, 135200), (160, 128440), (169, 121600), (190, 108160), (200, 102752), (208, 98800), (247, 83200), (256, 80275), (260, 79040), (304, 67600), (320, 64220), (325, 63232), (338, 60800), (380, 54080), (400, 51376), (416, 49400), (475, 43264), (494, 41600), (520, 39520), (608, 33800), (640, 32110), (650, 31616), (676, 30400), (760, 27040), (800, 25688), (832, 24700), (845, 24320), (950, 21632), (988, 20800), (1040, 19760), (1216, 16900), (1235, 16640), (1280, 16055), (1300, 15808), (1352, 15200), (1520, 13520), (1600, 12844), (1664, 12350), (1690, 12160), (1900, 10816), (1976, 10400), (2080, 9880), (2432, 8450), (2470, 8320), (2600, 7904), (2704, 7600), (3040, 6760), (3200, 6422), (3211, 6400), (3328, 6175), (3380, 6080), (3800, 5408), (3952, 5200), (4160, 4940), (4225, 4864)]