28077980

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{4093}}^1$

素因数の和:4123

約数の個数: 48

約数和(自身を含む): 68779200

約数和(自身を除く): 40701220

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, 4093, 6860, 8186, 16372, 20465, 28651, 40930, 57302, 81860, 114604, 143255, 200557, 286510, 401114, 573020, 802228, 1002785, 1403899, 2005570, 2807798, 4011140, 5615596, 7019495, 14038990, 28077980]

約数ペア:

[(1, 28077980), (2, 14038990), (4, 7019495), (5, 5615596), (7, 4011140), (10, 2807798), (14, 2005570), (20, 1403899), (28, 1002785), (35, 802228), (49, 573020), (70, 401114), (98, 286510), (140, 200557), (196, 143255), (245, 114604), (343, 81860), (490, 57302), (686, 40930), (980, 28651), (1372, 20465), (1715, 16372), (3430, 8186), (4093, 6860)]