18727520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{727}}^1$

素因数の和:772

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 34107808

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 727, 736, 805, 920, 1120, 1288, 1454, 1610, 1840, 2576, 2908, 3220, 3635, 3680, 5089, 5152, 5816, 6440, 7270, 10178, 11632, 12880, 14540, 16721, 20356, 23264, 25445, 25760, 29080, 33442, 40712, 50890, 58160, 66884, 81424, 83605, 101780, 116320, 117047, 133768, 162848, 167210, 203560, 234094, 267536, 334420, 407120, 468188, 535072, 585235, 668840, 814240, 936376, 1170470, 1337680, 1872752, 2340940, 2675360, 3745504, 4681880, 9363760, 18727520]

約数ペア:

[(1, 18727520), (2, 9363760), (4, 4681880), (5, 3745504), (7, 2675360), (8, 2340940), (10, 1872752), (14, 1337680), (16, 1170470), (20, 936376), (23, 814240), (28, 668840), (32, 585235), (35, 535072), (40, 468188), (46, 407120), (56, 334420), (70, 267536), (80, 234094), (92, 203560), (112, 167210), (115, 162848), (140, 133768), (160, 117047), (161, 116320), (184, 101780), (224, 83605), (230, 81424), (280, 66884), (322, 58160), (368, 50890), (460, 40712), (560, 33442), (644, 29080), (727, 25760), (736, 25445), (805, 23264), (920, 20356), (1120, 16721), (1288, 14540), (1454, 12880), (1610, 11632), (1840, 10178), (2576, 7270), (2908, 6440), (3220, 5816), (3635, 5152), (3680, 5089)]