281074780

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{40973}}^1$

素因数の和:41003

約数の個数: 48

約数和(自身を含む): 688363200

約数和(自身を除く): 407288420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 40973, 81946, 163892, 204865, 286811, 409730, 573622, 819460, 1147244, 1434055, 2007677, 2868110, 4015354, 5736220, 8030708, 10038385, 14053739, 20076770, 28107478, 40153540, 56214956, 70268695, 140537390, 281074780]

約数ペア:

[(1, 281074780), (2, 140537390), (4, 70268695), (5, 56214956), (7, 40153540), (10, 28107478), (14, 20076770), (20, 14053739), (28, 10038385), (35, 8030708), (49, 5736220), (70, 4015354), (98, 2868110), (140, 2007677), (196, 1434055), (245, 1147244), (343, 819460), (490, 573622), (686, 409730), (980, 286811), (1372, 204865), (1715, 163892), (3430, 81946), (6860, 40973)]