19408640

素因数分解:

$2^8\times 5^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:337

約数の個数: 72

約数和(自身を含む): 47461680

約数和(自身を除く): 28053040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 256, 257, 295, 320, 472, 514, 590, 640, 944, 1028, 1180, 1280, 1285, 1888, 2056, 2360, 2570, 3776, 4112, 4720, 5140, 7552, 8224, 9440, 10280, 15104, 15163, 16448, 18880, 20560, 30326, 32896, 37760, 41120, 60652, 65792, 75520, 75815, 82240, 121304, 151630, 164480, 242608, 303260, 328960, 485216, 606520, 970432, 1213040, 1940864, 2426080, 3881728, 4852160, 9704320, 19408640]

約数ペア:

[(1, 19408640), (2, 9704320), (4, 4852160), (5, 3881728), (8, 2426080), (10, 1940864), (16, 1213040), (20, 970432), (32, 606520), (40, 485216), (59, 328960), (64, 303260), (80, 242608), (118, 164480), (128, 151630), (160, 121304), (236, 82240), (256, 75815), (257, 75520), (295, 65792), (320, 60652), (472, 41120), (514, 37760), (590, 32896), (640, 30326), (944, 20560), (1028, 18880), (1180, 16448), (1280, 15163), (1285, 15104), (1888, 10280), (2056, 9440), (2360, 8224), (2570, 7552), (3776, 5140), (4112, 4720)]