21087120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2143}}^1$

素因数の和:2200

約数の個数: 80

約数和(自身を含む): 66995712

約数和(自身を除く): 45908592

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2143, 2460, 3280, 4286, 4920, 6429, 8572, 9840, 10715, 12858, 17144, 21430, 25716, 32145, 34288, 42860, 51432, 64290, 85720, 87863, 102864, 128580, 171440, 175726, 257160, 263589, 351452, 439315, 514320, 527178, 702904, 878630, 1054356, 1317945, 1405808, 1757260, 2108712, 2635890, 3514520, 4217424, 5271780, 7029040, 10543560, 21087120]

約数ペア:

[(1, 21087120), (2, 10543560), (3, 7029040), (4, 5271780), (5, 4217424), (6, 3514520), (8, 2635890), (10, 2108712), (12, 1757260), (15, 1405808), (16, 1317945), (20, 1054356), (24, 878630), (30, 702904), (40, 527178), (41, 514320), (48, 439315), (60, 351452), (80, 263589), (82, 257160), (120, 175726), (123, 171440), (164, 128580), (205, 102864), (240, 87863), (246, 85720), (328, 64290), (410, 51432), (492, 42860), (615, 34288), (656, 32145), (820, 25716), (984, 21430), (1230, 17144), (1640, 12858), (1968, 10715), (2143, 9840), (2460, 8572), (3280, 6429), (4286, 4920)]