816451340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{563}}^1\times {\mathrm{2339}}^1$

素因数の和:2942

約数の個数: 48

約数和(自身を含む): 1773757440

約数和(自身を除く): 957306100

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 563, 620, 1126, 2252, 2339, 2815, 4678, 5630, 9356, 11260, 11695, 17453, 23390, 34906, 46780, 69812, 72509, 87265, 145018, 174530, 290036, 349060, 362545, 725090, 1316857, 1450180, 2633714, 5267428, 6584285, 13168570, 26337140, 40822567, 81645134, 163290268, 204112835, 408225670, 816451340]

約数ペア:

[(1, 816451340), (2, 408225670), (4, 204112835), (5, 163290268), (10, 81645134), (20, 40822567), (31, 26337140), (62, 13168570), (124, 6584285), (155, 5267428), (310, 2633714), (563, 1450180), (620, 1316857), (1126, 725090), (2252, 362545), (2339, 349060), (2815, 290036), (4678, 174530), (5630, 145018), (9356, 87265), (11260, 72509), (11695, 69812), (17453, 46780), (23390, 34906)]