20213021520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{178813}}^1$

素因数の和:178989

約数の個数: 120

約数和(自身を含む): 68314815816

約数和(自身を除く): 48101794296

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 157, 180, 240, 314, 360, 471, 628, 720, 785, 942, 1256, 1413, 1570, 1884, 2355, 2512, 2826, 3140, 3768, 4710, 5652, 6280, 7065, 7536, 9420, 11304, 12560, 14130, 18840, 22608, 28260, 37680, 56520, 113040, 178813, 357626, 536439, 715252, 894065, 1072878, 1430504, 1609317, 1788130, 2145756, 2682195, 2861008, 3218634, 3576260, 4291512, 5364390, 6437268, 7152520, 8046585, 8583024, 10728780, 12874536, 14305040, 16093170, 21457560, 25749072, 28073641, 32186340, 42915120, 56147282, 64372680, 84220923, 112294564, 128745360, 140368205, 168441846, 224589128, 252662769, 280736410, 336883692, 421104615, 449178256, 505325538, 561472820, 673767384, 842209230, 1010651076, 1122945640, 1263313845, 1347534768, 1684418460, 2021302152, 2245891280, 2526627690, 3368836920, 4042604304, 5053255380, 6737673840, 10106510760, 20213021520]

約数ペア:

[(1, 20213021520), (2, 10106510760), (3, 6737673840), (4, 5053255380), (5, 4042604304), (6, 3368836920), (8, 2526627690), (9, 2245891280), (10, 2021302152), (12, 1684418460), (15, 1347534768), (16, 1263313845), (18, 1122945640), (20, 1010651076), (24, 842209230), (30, 673767384), (36, 561472820), (40, 505325538), (45, 449178256), (48, 421104615), (60, 336883692), (72, 280736410), (80, 252662769), (90, 224589128), (120, 168441846), (144, 140368205), (157, 128745360), (180, 112294564), (240, 84220923), (314, 64372680), (360, 56147282), (471, 42915120), (628, 32186340), (720, 28073641), (785, 25749072), (942, 21457560), (1256, 16093170), (1413, 14305040), (1570, 12874536), (1884, 10728780), (2355, 8583024), (2512, 8046585), (2826, 7152520), (3140, 6437268), (3768, 5364390), (4710, 4291512), (5652, 3576260), (6280, 3218634), (7065, 2861008), (7536, 2682195), (9420, 2145756), (11304, 1788130), (12560, 1609317), (14130, 1430504), (18840, 1072878), (22608, 894065), (28260, 715252), (37680, 536439), (56520, 357626), (113040, 178813)]