87906920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 223948800

約数和(自身を除く): 136041880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 47, 76, 92, 94, 95, 107, 115, 152, 184, 188, 190, 214, 230, 235, 376, 380, 428, 437, 460, 470, 535, 760, 856, 874, 893, 920, 940, 1070, 1081, 1748, 1786, 1880, 2033, 2140, 2162, 2185, 2461, 3496, 3572, 4066, 4280, 4324, 4370, 4465, 4922, 5029, 5405, 7144, 8132, 8648, 8740, 8930, 9844, 10058, 10165, 10810, 12305, 16264, 17480, 17860, 19688, 20116, 20330, 20539, 21620, 24610, 25145, 35720, 40232, 40660, 41078, 43240, 46759, 49220, 50290, 81320, 82156, 93518, 95551, 98440, 100580, 102695, 115667, 164312, 187036, 191102, 201160, 205390, 231334, 233795, 374072, 382204, 410780, 462668, 467590, 477755, 578335, 764408, 821560, 925336, 935180, 955510, 1156670, 1870360, 1911020, 2197673, 2313340, 3822040, 4395346, 4626680, 8790692, 10988365, 17581384, 21976730, 43953460, 87906920]

約数ペア:

[(1, 87906920), (2, 43953460), (4, 21976730), (5, 17581384), (8, 10988365), (10, 8790692), (19, 4626680), (20, 4395346), (23, 3822040), (38, 2313340), (40, 2197673), (46, 1911020), (47, 1870360), (76, 1156670), (92, 955510), (94, 935180), (95, 925336), (107, 821560), (115, 764408), (152, 578335), (184, 477755), (188, 467590), (190, 462668), (214, 410780), (230, 382204), (235, 374072), (376, 233795), (380, 231334), (428, 205390), (437, 201160), (460, 191102), (470, 187036), (535, 164312), (760, 115667), (856, 102695), (874, 100580), (893, 98440), (920, 95551), (940, 93518), (1070, 82156), (1081, 81320), (1748, 50290), (1786, 49220), (1880, 46759), (2033, 43240), (2140, 41078), (2162, 40660), (2185, 40232), (2461, 35720), (3496, 25145), (3572, 24610), (4066, 21620), (4280, 20539), (4324, 20330), (4370, 20116), (4465, 19688), (4922, 17860), (5029, 17480), (5405, 16264), (7144, 12305), (8132, 10810), (8648, 10165), (8740, 10058), (8930, 9844)]