20178406720

素因数分解:

$2^6\times 5^1\times {\mathrm{239}}^1\times {\mathrm{439}}^1\times {\mathrm{601}}^1$

素因数の和:1296

約数の個数: 112

約数和(自身を含む): 48441254400

約数和(自身を除く): 28262847680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 239, 320, 439, 478, 601, 878, 956, 1195, 1202, 1756, 1912, 2195, 2390, 2404, 3005, 3512, 3824, 4390, 4780, 4808, 6010, 7024, 7648, 8780, 9560, 9616, 12020, 14048, 15296, 17560, 19120, 19232, 24040, 28096, 35120, 38240, 38464, 48080, 70240, 76480, 96160, 104921, 140480, 143639, 192320, 209842, 263839, 287278, 419684, 524605, 527678, 574556, 718195, 839368, 1049210, 1055356, 1149112, 1319195, 1436390, 1678736, 2098420, 2110712, 2298224, 2638390, 2872780, 3357472, 4196840, 4221424, 4596448, 5276780, 5745560, 6714944, 8393680, 8442848, 9192896, 10553560, 11491120, 16787360, 16885696, 21107120, 22982240, 33574720, 42214240, 45964480, 63057521, 84428480, 126115042, 252230084, 315287605, 504460168, 630575210, 1008920336, 1261150420, 2017840672, 2522300840, 4035681344, 5044601680, 10089203360, 20178406720]

約数ペア:

[(1, 20178406720), (2, 10089203360), (4, 5044601680), (5, 4035681344), (8, 2522300840), (10, 2017840672), (16, 1261150420), (20, 1008920336), (32, 630575210), (40, 504460168), (64, 315287605), (80, 252230084), (160, 126115042), (239, 84428480), (320, 63057521), (439, 45964480), (478, 42214240), (601, 33574720), (878, 22982240), (956, 21107120), (1195, 16885696), (1202, 16787360), (1756, 11491120), (1912, 10553560), (2195, 9192896), (2390, 8442848), (2404, 8393680), (3005, 6714944), (3512, 5745560), (3824, 5276780), (4390, 4596448), (4780, 4221424), (4808, 4196840), (6010, 3357472), (7024, 2872780), (7648, 2638390), (8780, 2298224), (9560, 2110712), (9616, 2098420), (12020, 1678736), (14048, 1436390), (15296, 1319195), (17560, 1149112), (19120, 1055356), (19232, 1049210), (24040, 839368), (28096, 718195), (35120, 574556), (38240, 527678), (38464, 524605), (48080, 419684), (70240, 287278), (76480, 263839), (96160, 209842), (104921, 192320), (140480, 143639)]